| 单词 | muscle fiber |
| 例句 | This was now pre-empted by Hugh Huxley, who argued that muscle fibers were living and hence not subject to rules for physicists. Double Helix 1968-02-27T00:00:00Z From one angle, it is a collection of muscle fibers and connective tissue, just another organ pulsing away in the abdomen. The Womb Is a Miracle, and a Mystery 2023-03-07T05:00:00Z “Exercising” the muscle fibers with electrical currents could start to be a significant energy-suck, reducing the benefits of making a transition to lab meat. Fake burgers will save us all! 2013-12-08T22:00:00Z “The massage or foam rolling helps release the muscle fibers and increases the blood flow. The next step should be to stretch.” Massage, foam rolling and stretching: A recipe for muscle recovery “So in essence the muscle is being pulled in two different directions at once, which causes microscopic tearing of muscle fibers and subsequent soreness,” he says. How to cure a workout hangover 2015-05-19T04:00:00Z Bubbling winged wearables, to use a material ecology term, look like muscle fibers or bacterial colonies. Who Is Neri Oxman? 2018-10-06T04:00:00Z After about four weeks off, however, muscle fibers begin to shrink, and sometime between then and eight weeks, that decline becomes measurable, Zimmerman says. How long does it take to get out of shape? 2015-04-14T04:00:00Z Outliers with long muscle fibers — cuts like skirt, flank and hanger — are less expensive and more flavorful. Steak That Sizzles on the Stovetop 2014-05-13T04:00:00Z Approximately one million cells are needed to create one muscle fiber, and it takes about 20,000 such fibers to make a five-ounce burger. Fake burgers will save us all! 2013-12-08T22:00:00Z “Consuming protein with carbohydrates soon after completing a workout will accelerate the healing of damaged muscle fibers and the dissipation of soreness,” Fitzgerald says. How to cure a workout hangover 2015-05-19T04:00:00Z But the resulting muscle fibers are still shy of edible. Fake burgers will save us all! 2013-12-08T22:00:00Z The muscles in the human body have special muscle fibers called nuclear chain fibers and nuclear bag fibers which help in detecting the traveling state of the body. A novel system for slip prevention of unmanned rovers 2023-11-15T05:00:00Z Further analyses revealed that interferon acts directly on muscle fibers to alter mitochondrial function and limit energy production. Some benefits of exercise stem from the immune system 2023-11-03T04:00:00Z Watson had missed the two previous games because of the injury in his throwing shoulder, and he said last week he had microtears in muscle fibers, Cleveland.com reported. What to know about the Seahawks’ Week 8 opponent, the Cleveland Browns 2023-10-24T04:00:00Z While mechanically stimulating the muscle fibers over the 10-day period did not seem to make them any stronger, it did cause them all to grow in the same direction. Moving muscle fibers with magnets 'programs' how they align within tissue 2023-10-20T04:00:00Z Correspondingly, the muscle fibers of females differ from those of males. The Theory That Men Evolved to Hunt and Women Evolved to Gather Is Wrong 2023-10-17T04:00:00Z On the other hand, nuclear bag fibers detect how fast muscle fibers stretch and help in detecting the dynamic state of the body. A novel system for slip prevention of unmanned rovers 2023-11-15T05:00:00Z A small molecule previously shown to enhance strength in injured or old laboratory mice does so by restoring lost connections between nerves and muscle fibers, Stanford Medicine researchers have found. Restoring nerve-muscle connections boosts strength of aging mice, study finds 2023-10-11T04:00:00Z This method also opens new ways to investigate several genes simultaneously or even entire signaling pathways in muscle fibers quickly, cost-effectively and efficiently. Win-win in muscle research: Faster results and fewer laboratory animals thanks to new method 2023-10-12T04:00:00Z Raman and colleagues plan to take the study further by investigating how different mechanical stimulation regimens impact both healthy and diseased muscle fibers. Moving muscle fibers with magnets 'programs' how they align within tissue 2023-10-20T04:00:00Z Females have more type I, or “slow-twitch,” muscle fibers than males do. The Theory That Men Evolved to Hunt and Women Evolved to Gather Is Wrong 2023-10-17T04:00:00Z Now, researchers have published the most detailed examination to date of the tiny, muscle fiber bundles involved. News at a glance: China’s S&T clusters, abundant fairy circles, and Arecibo’s next chapter 2023-09-27T04:00:00Z The study showed that levels of the gerozyme increase in muscles after nerve damage and that it is prevalent in muscle fibers of people with neuromuscular diseases. Restoring nerve-muscle connections boosts strength of aging mice, study finds 2023-10-11T04:00:00Z On the one hand, muscle fibers are very large and very fragile when isolated. Win-win in muscle research: Faster results and fewer laboratory animals thanks to new method 2023-10-12T04:00:00Z The analysis, reported today in Current Biology, suggests elephants get their fine control from almost 90,000 surprisingly tiny bundles of muscle fiber. Elephant trunk’s ‘stunning’ microscopic musculature may explain its dexterity 2023-09-26T04:00:00Z Muscle overuse can sometimes trigger nerves to fire inappropriately and make the muscle fibers contract. Spicy candies relieve nighttime leg cramps like magic 2023-08-16T04:00:00Z Resting allows the juices to redistribute throughout the muscle fibers so they don’t flow out when the meat is cut. Chili-rubbed pork with cucumber-melon salad: A sweet and savory yes! 2023-06-09T04:00:00Z The researchers also identified discrete clumps of 15-PGDH in the muscle fibers of people with several types of neuromuscular disorders suggesting that the gerozyme may have a role in causing these human disorders. Restoring nerve-muscle connections boosts strength of aging mice, study finds 2023-10-11T04:00:00Z This combination causes the guide RNA in the muscle fibers to encounter the Cas9 protein, changing the genetic material as desired. Win-win in muscle research: Faster results and fewer laboratory animals thanks to new method 2023-10-12T04:00:00Z The mammalian tongue has evolved into an intricate network of muscle fibers capable of moving in complex ways even without any bones, tendons, or joints. How the tongue shaped life on Earth 2023-05-24T04:00:00Z Because of a mutation in the gene for dystrophin, DMD patients lack functioning copies of the huge protein that serves as a shock absorber inside muscle fiber cells. Muscular dystrophy gene therapy nears approval, but safety concerns linger 2023-05-23T04:00:00Z Contrary to popular belief, the number of muscle fibers cannot be increased through exercise; instead the muscle cells simply get bigger. Fundamentals of Biology 2015-01-01T00:00:00Z Muscles are composed of individual cells called muscle fibers. Concepts of Biology 2013-04-25T00:00:00Z In order to change and study gene function in muscle fibers, all of the muscle fiber nuclei must be changed, which is difficult to achieve. Win-win in muscle research: Faster results and fewer laboratory animals thanks to new method 2023-10-12T04:00:00Z Within each layer, bundles of microscopic muscle fibers are arranged like the teeth of a comb, all pointing in the same direction. Why Is It So Hard to Make Vegan Fish? 2023-02-28T05:00:00Z As damaged muscle fiber cells are being repaired by dividing muscle stem cells, some will not inherit the loop, and the benefits will fade as the modified cells become outnumbered. Muscular dystrophy gene therapy nears approval, but safety concerns linger 2023-05-23T04:00:00Z The brain sends signals, in the form of action potentials, through the nervous system to the motor neuron that innervates the muscle fiber. Fundamentals of Biology 2015-01-01T00:00:00Z Figure 16.18 A skeletal muscle fiber is surrounded by a plasma membrane called the sarcolemma, with a cytoplasm called the sarcoplasm. Concepts of Biology 2013-04-25T00:00:00Z "The method enables us to ensure that only the muscle fibers actually change their genetic material," explains first author Marco Thürkauf. Win-win in muscle research: Faster results and fewer laboratory animals thanks to new method 2023-10-12T04:00:00Z But most processes for making meat substitutes aren’t designed to mimic muscle fiber. Why Is It So Hard to Make Vegan Fish? 2023-02-28T05:00:00Z The researchers found that the cavefish muscle fibers contracted with less force than those of surface fish. Evolution Turns These Knobs to Make a Hummingbird Hyperquick and a Cavefish Sluggishly Slow 2023-02-24T05:00:00Z The scientists discovered a curious contrast between the wild and laboratory-reared fish when it came to the size of muscle fibers. How will ‘couch potato’ humans evolve? Idle cavefish offer clues. 2023-02-02T05:00:00Z A muscle fiber is composed of many fibrils packaged into orderly units. Concepts of Biology 2013-04-25T00:00:00Z The texture is distinct, a function of the tightly packed muscle fibers. How close would YOU get to a Pacific lamprey? 2022-09-23T04:00:00Z Luckily, food scientists are now finding creative new ways to re-create fish’s intricate sheets of parallel muscle fiber. Why Is It So Hard to Make Vegan Fish? 2023-02-28T05:00:00Z The team announced the move Tuesday and said that an MRI done on the calf Monday revealed fascial disruption, but no muscle fiber disruption. Astros ace Verlander placed on IL with calf injury 2022-08-30T04:00:00Z Usually smaller muscle fibers are associated with less vigorous swimming and muscle atrophy. How will ‘couch potato’ humans evolve? Idle cavefish offer clues. 2023-02-02T05:00:00Z Examples of the types of work that cells need to do include building complex molecules, transporting materials, powering the motion of cilia or flagella, and contracting muscle fibers to create movement. Concepts of Biology 2013-04-25T00:00:00Z There are approximately 650 skeletal muscles in the human body, each of which is composed of muscle fibers. Biology for AP Courses 2022-06-09T00:00:00Z Than Nho Do, a senior lecturer at the school, said his team has created tiny silicon tubes, similar to the size of yarn and inspired by muscle fibers, that can weaving into sheets of fabric. Slowly but surely, robots will wind up in our clothes 2022-07-29T04:00:00Z They’re retained in distinct muscle fibers, essentially waiting to be reactivated with retraining. Here’s what muscle memory really means, and how to use it 2022-08-09T04:00:00Z “We were surprised to find that laboratory cavefish had larger muscle fibers than laboratory surface fish,” Luke Olsen, a co-author of the paper who is a graduate student in Rohner’s lab, wrote in an email. How will ‘couch potato’ humans evolve? Idle cavefish offer clues. 2023-02-02T05:00:00Z Within each muscle fiber are myofibrils, long cylindrical structures that lie parallel to the muscle fiber. Concepts of Biology 2013-04-25T00:00:00Z In addition to the collection of organelles typical of eukaryotic cells, each muscle fiber contains myofibrils, which, in turn, consist of arrangements of protein filaments called actin and myosin. Biology for AP Courses 2022-06-09T00:00:00Z The endomysium contains the extracellular fluid and nutrients to support the muscle fiber. Anatomy and Physiology 2013-06-19T00:00:00Z When you exercise, it’s normal for muscle fibers to experience minor damage; this is part of the way a muscle gets stronger. Here’s what muscle memory really means, and how to use it 2022-08-09T04:00:00Z However, the scientists found just the opposite when they examined wild fish: The cavefish had smaller muscle fibers than the surface fish. How will ‘couch potato’ humans evolve? Idle cavefish offer clues. 2023-02-02T05:00:00Z Contraction is stimulated by an electrochemical signal from a nerve cell associated with the muscle fiber. Concepts of Biology 2013-04-25T00:00:00Z The binding of myosin to actin causes the actin filaments to slide, shortening the muscle fiber. Biology for AP Courses 2022-06-09T00:00:00Z Instead, structural proteins are added to muscle fibers in a process called hypertrophy, so cell diameter increases. Anatomy and Physiology 2013-06-19T00:00:00Z When your muscles are not accustomed to the movement — or the weight or endurance of the movement — your muscle fibers undergo mechanical stress and small breaks occur in their membranes. Perspective | How should you deal with sore muscles? 2022-05-15T04:00:00Z In the lab, cavefish convert the more generous food supply into sugars and fats, which get stored in the muscle fibers, causing them to grow larger. How will ‘couch potato’ humans evolve? Idle cavefish offer clues. 2023-02-02T05:00:00Z “So they would just do very intense explosive type weight training. And this develops fast-twitch muscle fiber, and the benefits that will come will carry over. It’s not just that they got this boost.” ‘The Gains That Could Be Made Would Be Enormous’ 2022-03-25T04:00:00Z Nerve impulses traveling down motor neurons cause the release of the acetylcholine from vesicles in the axon terminus into the synapse between the neuron and the muscle fiber. Biology for AP Courses 2022-06-09T00:00:00Z The proportion of SO muscle fibers in muscle determines the suitability of that muscle for endurance, and may benefit those participating in endurance activities. Anatomy and Physiology 2013-06-19T00:00:00Z When the muscle is accustomed to work, the rivets help the individual muscle fibers work as a well-choreographed team to move the body. Perspective | How should you deal with sore muscles? 2022-05-15T04:00:00Z The cavefish use their muscle fibers as “a storage site for fuel reserves.” How will ‘couch potato’ humans evolve? Idle cavefish offer clues. 2023-02-02T05:00:00Z Bayern’s defense will be without Niklas Süle for its upcoming games after the club said Thursday he tore a muscle fiber at the back of his right thigh in training the day before. Misfiring Bayern lets Dortmund back in Bundesliga title race 2022-03-17T04:00:00Z Within each muscle fiber are myofibrils—long cylindrical structures that lie parallel to the muscle fiber. Biology for AP Courses 2022-06-09T00:00:00Z Resistance exercise affects muscles by increasing the formation of myofibrils, thereby increasing the thickness of muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z “Despite government warnings to be sure to cook chicken to 165°F, in reality, about 150°F or so, muscle fibers have become almost completely squeezed dry,” López-Alt wrote. How to cook chicken thighs and quarters — the best poultry cuts you can buy 2022-02-18T05:00:00Z These pathways in turn trigger the production of more proteins that get incorporated into the muscle fibers and cause the muscle to increase in size. Perspective | Why muscles change — and get weaker — with age, even when you work out 2022-02-12T05:00:00Z The engineered strands’ strength and toughness exceeded that of natural titin as measured in muscle fibers. Bacterial Builders Churn Out Lengthy Muscle Proteins 2021-12-31T05:00:00Z Each skeletal muscle fiber is controlled by a motor neuron, which conducts signals from the brain or spinal cord to the muscle. Biology for AP Courses 2022-06-09T00:00:00Z Cellular damage to muscle fibers that occurs after intense exercise includes damage to the sarcolemma and myofibrils. Anatomy and Physiology 2013-06-19T00:00:00Z One way to deal with tough muscle fibers is to simply break them apart. How to make cheap cuts of beef tender and delicious 2021-12-13T05:00:00Z Bigger muscles simply have larger muscle fibers and cells, and this allows you to lift heavier weights. Perspective | Why muscles change — and get weaker — with age, even when you work out 2022-02-12T05:00:00Z “Because of the selection, we’ve changed the muscle fibers. It’s a consequence of the selection that we’re seeing these muscle problems.” How Amazon may change America’s chicken economy 2021-11-26T05:00:00Z The area of the sarcolemma on the muscle fiber that interacts with the neuron is called the motor end plate. Biology for AP Courses 2022-06-09T00:00:00Z Cardiac muscle fibers cells also are extensively branched and are connected to one another at their ends by intercalated discs. Anatomy and Physiology 2013-06-19T00:00:00Z What makes meat tough is the long muscle fibers — a.k.a. “the grain” — so simply cut them to make them shorter and you automatically have more tender meat. How to make cheap cuts of beef tender and delicious 2021-12-13T05:00:00Z The disease afflicting Tabebordbar’s father involves a toxic substance produced by about 1% of muscle cells that then spreads through the muscle fibers. He can’t cure his dad. But a scientist’s research may help everyone else 2021-11-07T04:00:00Z That results in lots of springy connective tissue in and around the muscle fibers, which is what makes them so tough. How to cook a holiday brisket that will be tender every time 2021-08-27T04:00:00Z Electrical signals travel along the neuron’s axon, which branches through the muscle and connects to individual muscle fibers at a neuromuscular junction. Biology for AP Courses 2022-06-09T00:00:00Z Although smooth muscle contraction relies on the presence of Ca++ ions, smooth muscle fibers have a much smaller diameter than skeletal muscle cells. Anatomy and Physiology 2013-06-19T00:00:00Z He knows that his metabolism allows him to develop, and regenerate, the sorts of muscle fiber a striker needs. The Making of a Goal Machine 2021-05-08T04:00:00Z There are differences, like quick twitch muscle animals have different muscle fibers, and structures than ungulates or larger, slower animals. The business of meatless meat 2020-12-22T05:00:00Z Cuts such as brisket and short ribs are chewy because they contain more connective tissue, such as the sheets of collagen that surround muscle fibers. Not all leftovers are created equal. Here’s why some dishes taste better the next day 2020-12-14T05:00:00Z These contractions extend from the muscle fiber through connective tissue to pull on bones, causing skeletal movement. Biology for AP Courses 2022-06-09T00:00:00Z A motor unit is formed by a motor neuron and all of the muscle fibers that are innervated by that same motor neuron. Anatomy and Physiology 2013-06-19T00:00:00Z The muscles of the control animals teemed with healthy, new muscle fibers and a network of new blood vessels ferrying extra oxygen and fuel to them. Is Your Blood Sugar Undermining Your Workouts? 2020-07-29T04:00:00Z Vyondys received “accelerated approval” based on preliminary results showing it boosts a protein that aids the growth of muscle fibers. In surprise decision, US approves muscular dystrophy drug 2019-12-13T05:00:00Z The therapy is designed to treat a form of Duchenne muscular dystrophy caused by mutations in the RNA that codes for the protein that helps to connect muscle fibers’ cytoskeletons to a surrounding matrix. Gene Therapy Arrives 2019-12-03T05:00:00Z In individual muscle fibers, the amount of tension produced depends on the cross-sectional area of the muscle fiber and the frequency of neural stimulation. Biology for AP Courses 2022-06-09T00:00:00Z Muscle atrophy due to age is called sarcopenia and occurs as muscle fibers die and are replaced by connective and adipose tissue. Anatomy and Physiology 2013-06-19T00:00:00Z A decrease in testosterone is largely responsible for the change, leading to a decline in the size and number of muscle fibers. The 'Formula One' secret behind Tom Brady's time-cheating dominance 2019-08-22T04:00:00Z Rhabdomyolysis is a syndrome where muscle fibers release their contents into the blood stream. Exclusive: Ghosn, suffering from kidney failure, was arrested... 2019-04-11T04:00:00Z In this case, that means the long way, knife running parallel with lines of muscle fibers so clearly evident. Steak meets stir-fry: Here’s what happens when you treat the ingredients right 2019-03-19T04:00:00Z The plasma membrane of a skeletal muscle fiber is called the sarcolemma. Biology for AP Courses 2022-06-09T00:00:00Z Contraction in each cardiac muscle fiber is triggered by Ca++ ions in a similar manner as skeletal muscle, but here the Ca++ ions come from SR and through voltage-gated calcium channels in the sarcolemma. Anatomy and Physiology 2013-06-19T00:00:00Z Unfortunately for athletes whose sports require power or explosiveness – jumping, sprinting or accelerating – the loss of fast-twitch muscle fibers is greatest, stacking the deck against basketball or football players trying to play past 40. The 'Formula One' secret behind Tom Brady's time-cheating dominance 2019-08-22T04:00:00Z The Bavarian club says Ribery tore muscle fiber in his right thigh during Wednesday evening’s training session at the team’s winter camp in Doha, Qatar. Bayern veteran Franck Ribery injured in training game 2019-01-10T05:00:00Z “The more you run, the more you’re breaking down your muscle fibers so movements like squats, lunges, step ups, and dead lifts will help to strengthen the legs and minimize muscle breakdown,” he says. An Ultramarathon Runner at 71 2018-11-10T05:00:00Z A muscle fiber is composed of many fibrils, packaged into orderly units. Biology for AP Courses 2022-06-09T00:00:00Z How would muscle contractions be affected if skeletal muscle fibers did not have T-tubules? Anatomy and Physiology 2013-06-19T00:00:00Z A loss in fast-twitch muscle fibers as well as a reduction in the rubber band like quality of muscles and tendons. The 'Formula One' secret behind Tom Brady's time-cheating dominance 2019-08-22T04:00:00Z The second component is being able to use healing, cooling, and pressure to create something analogous to muscle fibers. These are the technology advances that could end animal farming 2018-11-09T05:00:00Z However, the muscle that begins to spasm is usually the orbicularis oculi, the delicate muscle fibers responsible for opening and closing the eyelid. Eye twitches are usually harmless, but here’s what you can do about them 2018-08-27T04:00:00Z The number of cross-bridges formed between actin and myosin determine the amount of tension that a muscle fiber can produce. Biology for AP Courses 2022-06-09T00:00:00Z Why does a motor unit of the eye have few muscle fibers compared to a motor unit of the leg? Anatomy and Physiology 2013-06-19T00:00:00Z During this work, fuel is used up, waste products are created and muscle fiber structure is disrupted by multiple micro tears. Why stretching is (still) important for weight loss and exercise 2018-08-12T04:00:00Z “Exercise is the stress that breaks down your muscle fibers. It’s the recovery phase that actually builds your muscles.” The Case for a Second Gym Membership 2018-08-09T04:00:00Z Cultured meat, also sometimes called clean meat or lab-grown meat, is made by extracting cells from an animal and prompting them to mature into muscle fibers and grow in a bioreactor. FDA tries to take the reins on regulating cultured meat 2018-07-13T04:00:00Z The number of muscle fibers contracting determines how much force the whole muscle produces. Biology for AP Courses 2022-06-09T00:00:00Z Other signs of an LMN lesion are fibrillation, fasciculation, and compromised or lost reflexes resulting from the denervation of the muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z This arm motion is modulated continuously on a millisecond scale by regulating hundreds of small clusters of muscle fibers individually to determine how fast the arm moves and with what force. Wristband Lets the Brain Control a Computer with a Thought and a Twitch 2018-03-27T04:00:00Z While nearly impossible to recognize as such, the remains were confirmed to be a dead whale whose muscle fibers began to fray and look "hairy." Strange Sea Creature Washes Ashore, Stumps Scientists 2018-03-21T04:00:00Z This part of the experiment was to cause a change in the “memory” within the nuclei of the muscle fibers. The Olympic Motto, Cellular Memories and the Epigenetic Effects of Doping 2018-02-12T05:00:00Z Examples of the types of work that cells need to do include building complex molecules, transporting materials, powering the beating motion of cilia or flagella, contracting muscle fibers to create movement, and reproduction. Biology for AP Courses 2022-06-09T00:00:00Z During development, many smaller cells fuse to form a mature muscle fiber. Anatomy and Physiology 2013-06-19T00:00:00Z He lost about 30 pounds in that time and “every single possible muscle fiber,” he said. Freeskier Torin Yater-Wallace candid about hardships in film 2018-01-11T05:00:00Z The pressure from the growing pool inside his heart tore the muscle fibers. Opinion | My son has autism. Discrimination almost cost him his life. 2017-08-30T04:00:00Z Did this mean that the muscle fibers would respond differently to training? The Olympic Motto, Cellular Memories and the Epigenetic Effects of Doping 2018-02-12T05:00:00Z Prolonged sitting "may predispose the muscles to malfunction," he explains, as the muscle fibers may become hyperactive. 9 Causes of Leg Cramps—and How To Stop Them 2017-08-01T04:00:00Z Skeletal muscle fibers are multinucleated structures that compose the skeletal muscle. Anatomy and Physiology 2013-06-19T00:00:00Z There simply isn’t enough known about the musculature of early hominins to speculate about their muscle fiber distributions, she says, so linking slow-twitch fibers to human evolution is a stretch. How chimps outmuscle humans 2017-06-26T04:00:00Z Uyeno has also found an important difference between Atlantic and Pacific hagfish: The latter have muscle fibers embedded in the skin, he and his colleagues reported in a separate presentation at the meeting. How the slimy hagfish ties itself up in knots—and survives shark attacks 2017-01-06T05:00:00Z Control mice failed to show any appreciable increase in muscle fiber size after this short period, while, in contrast, the testosterone-exposed mice showed a 31 percent increase. The Olympic Motto, Cellular Memories and the Epigenetic Effects of Doping 2018-02-12T05:00:00Z The smallest functional entity of muscle is called a motor unit, which consists of a neuron and the muscle fibers it activates. 85-Year-Old Marathoner Is So Fast That Even Scientists Marvel 2016-12-28T05:00:00Z These tissues include the skeletal muscle fibers, blood vessels, nerve fibers, and connective tissue. Anatomy and Physiology 2013-06-19T00:00:00Z “The muscle fiber finding is an interesting factoid, but the tale that they spin based on that just doesn’t come from their data.” How chimps outmuscle humans 2017-06-26T04:00:00Z We increase the size of our atrophied muscle fibers with exercise but, for a variety of physiological reasons, do not add to the number of fibers, Dr. Bamman says. Can You Regain Muscle Mass After Age 60? 2016-12-02T05:00:00Z Rarely, people develop a more severe problem called rhabdomyolosis, where the muscle fibers break down and may damage the kidneys. Statins Often Interact With Other Heart Drugs 2016-10-17T04:00:00Z "Protein is especially important as every run breaks down and slightly damages your muscle fibers. Protein is what helps them build back up and by increasing muscle synthesis, increases your metabolic rate," he says. 8 Foods Every Runner Needs to Lose Weight 2016-09-30T04:00:00Z Figure 10.3 The Three Connective Tissue Layers Bundles of muscle fibers, called fascicles, are covered by the perimysium. Anatomy and Physiology 2013-06-19T00:00:00Z The team used a technique called gel electrophoresis to break down the muscles into individual muscle fibers, and compared this breakdown to human muscle fiber data. How chimps outmuscle humans 2017-06-26T04:00:00Z Eccentric exercise causes tiny tears in muscle fibers, resulting in something known as delayed onset muscle soreness, or DOMS. 6 Little-Known Reasons for Eating (Good) Carbs 2016-09-22T04:00:00Z The drug acts on a protein called dystrophin, which plays a role in the growth of muscle fibers. FDA Oks 1st Muscular Dystrophy Drug; Awaits Proof It Works 2016-09-19T04:00:00Z The “grain” refers to the flow of the muscle fibers in a cut of meat. How to slice steak the right way, plus a great recipe for tri-tip salad 2016-08-23T04:00:00Z Inside each skeletal muscle, muscle fibers are organized into individual bundles, each called a fascicle, by a middle layer of connective tissue called the perimysium. Anatomy and Physiology 2013-06-19T00:00:00Z If done right, the cox’s commands help the rowers push past the pain barrier and keep pulling those oars when every muscle fiber tells them to stop. What does the cox say? Seat No. 9 keeps the rowers in line 2016-08-02T04:00:00Z This damage sets off a series of biochemical events that results in the muscle fibers' growth. What's the Best Exercise for Building Muscle? 2016-04-18T04:00:00Z The muscle fiber responds, and your leg, eyelid, pinky finger or other body part moves. Exercise Makes Our Muscles Work Better With Age 1461-08-01T05:00:00Z The best way to impact muscle fiber size is by resistance training or weightlifting. 7 Reasons to Build Muscle That Have Nothing to Do With Looks 2016-03-18T04:00:00Z Inside each fascicle, each muscle fiber is encased in a thin connective tissue layer of collagen and reticular fibers called the endomysium. Anatomy and Physiology 2013-06-19T00:00:00Z It confirmed that I was lactose intolerant and predicted my athletic performance, based on my type of muscle fiber, compared to world class athletes. Meeting My DNA 1459-10-10T05:00:00Z The drugs aim to allow the body to produce a protein called dystrophin that protects muscle fibers—which is lacking in Duchenne patients. Muscular Dystrophy Drugs Face New FDA Questions 2016-01-21T05:00:00Z They also examined the electrical signal plots to see how effectively each motor neuron was communicating with its attached muscle fiber. Exercise Makes Our Muscles Work Better With Age 1461-08-01T05:00:00Z “The muscle fibers in your face and body can be activated unbeknownst to you, at much lower levels than if you were to perform those movements yourself.” Are You Catching Other People's Emotions? 2016-01-20T05:00:00Z The tension created by contraction of the muscle fibers is then transferred though the mysia, to the tendon, and then to the periosteum to pull on the bone for movement of the skeleton. Anatomy and Physiology 2013-06-19T00:00:00Z DMD, which mainly affects boys, stems from defects in the gene coding for dystrophin, a protein that helps strengthen and protect muscle fibers. CRISPR helps heal mice with muscular dystrophy 2015-12-31T05:00:00Z “When you go out for an easy walk, you call upon about 50% to 60% of your muscle fibers,” Dr. Little says. High-Intensity Interval Training Offers a Short, Sweet—and Effective—Workout Routine 2015-11-30T05:00:00Z However, motor neurons die as we age, beginning as early as in our 30s, abruptly marooning the attached muscle fiber, leaving it disconnected from the nervous system. Exercise Makes Our Muscles Work Better With Age 1461-08-01T05:00:00Z Engineer Filomena Simone, a PhD student who co-developed the prototype bionic hand, said they copied the structure of muscles in the human body by grouping the fine wires into bundles to mimic muscle fibers. Bionic hand uses smart wires to mimic muscle fibers 2015-07-22T04:00:00Z In addition, every muscle fiber in a skeletal muscle is supplied by the axon branch of a somatic motor neuron, which signals the fiber to contract. Anatomy and Physiology 2013-06-19T00:00:00Z These age-related declines are not as obvious in type I muscles, those muscle fibers most associated with endurance-type exercise. How Aging Affects Athletic Performance 2015-07-11T04:00:00Z In fact, getting extra moisture into your burger is important for optimal deliciousness: When meat is ground up, muscle fibers are pulverized and start to leak moisture. The science behind perfect grilling 2015-06-29T04:00:00Z So some muscle fibers, bereft of their original neuron, do not get another. Exercise Makes Our Muscles Work Better With Age 1461-08-01T05:00:00Z Some species swim by fluttering specialized bristles; others are semi-transparent and glisten when light reflects off of their muscle fibers. Six Pictures of Beautiful, Bizarre Worms That Slink Or Swim 2015-07-01T04:00:00Z Some other terminology associated with muscle fibers is rooted in the Greek sarco, which means “flesh.” Anatomy and Physiology 2013-06-19T00:00:00Z And they tend to form muscle fibers when they do. This is the future of meat 2015-05-20T04:00:00Z Rip a hamstring, and those little muscle fibers can fray like a crummy kite. Beware the hamstring injury, tormentor of Chris Paul and many others 2015-05-06T04:00:00Z Internally, their muscle tissue begins to break down, releasing muscle fiber into the bloodstream and causing the kidneys to fail. New Synthetic Drug 'Flakka' Triggers Crazed Behaviors 2015-04-16T04:00:00Z Adding a pulse at the end of an exercise is the best way to activate the fast-twitch muscle fibers of the body. 6 Exercise Tweaks That Make a Big Difference 2015-03-18T04:00:00Z Figure 10.4 Muscle Fiber A skeletal muscle fiber is surrounded by a plasma membrane called the sarcolemma, which contains sarcoplasm, the cytoplasm of muscle cells. Anatomy and Physiology 2013-06-19T00:00:00Z Their fingers were worn raw, their muscle fibers stretched to the absolute limit. Climbers made history on Yosemite, but how did they use the bathroom? 2015-01-16T05:00:00Z The drug is designed to address the cause of the disease by allowing the body to produce a functional dystrophin protein, which plays a key role in muscle fiber function. Sarepta tumbles on new delay for key drug 2014-10-27T04:00:00Z Jordan said the radiation contributed to a condition, rhabdomyolysis, which according to MedlinePlus, an online medical encyclopedia, “is the breakdown of muscle tissue that leads to the release of muscle fiber contents into the blood.” Woman healing after bout with flesh-eating disease 2014-10-10T04:00:00Z It is no different from being born with a genetic advantage in terms of eyesight or fast-twitch muscle fibers. World-Class Female Sprinter With Too Much Testosterone Should Be Allowed To Compete 2014-09-06T04:00:00Z This is where the muscle fiber first responds to signaling by the motor neuron. Anatomy and Physiology 2013-06-19T00:00:00Z He says pumping this much iron tears down the muscle fibers and then you need enough downtime, and a truckload of high protein food, to rebuild them back stronger. EXCHANGE: Decatur bench presser tops 500 pounds 2014-08-28T04:00:00Z The Skulpt Aim helps you get a better handle on your fitness by tracking your body fat percentage and the muscle fiber size instead of your weight. 8 Things You Didn’t Know You Can Do with Your Smartphone 2014-08-22T04:00:00Z Dry needling involves using hollow needles to stimulate muscle fibers. Panel eyes dry needling by physical therapists 2014-08-20T04:00:00Z The first cultured beef burger had 20,000 muscle fibers but zero fat cells. The Frankenburger Is Coming Sooner Than You Think Thanks to Google 2014-08-15T04:00:00Z Every skeletal muscle fiber in every skeletal muscle is innervated by a motor neuron at the NMJ. Anatomy and Physiology 2013-06-19T00:00:00Z “It doesn’t fatigue,” she says, “because there’s a lot of redundancy in the muscle architecture. You simply activate different muscle fibers and get the same result.” Fact or Fiction?: The Tongue Is the Strongest Muscle in the Body 2014-08-15T04:00:00Z As the muscle fiber cells die, they are replaced by fat and less pliable, inactive fibrous tissue. CureDuchenne Extends Prosensa Pipeline Collaboration With $7 Million 2014-08-13T04:00:00Z "Each of us is born with a certain percentage of fast and slow twitch muscle fibers," said Sandvold. 10-year-old boy's distance running feats raise questions 2014-06-10T04:00:00Z Perhaps the most impressive thing about the video is Player's commitment to preserving fast-twitch muscle fiber. Video: Gary Player can still sprint: The Loop 2013-10-16T04:00:00Z The motor end-plate is the location of the ACh-receptors in the muscle fiber sarcolemma. Anatomy and Physiology 2013-06-19T00:00:00Z There, the cells assembled themselves into muscle fibers, began beating in the heart’s rhythm, and ultimately were nurtured by the monkeys’ arteries and veins, which grew into the new heart tissue. ‘Very big deal’: UW team uses stem cells to fix monkey hearts 2014-05-01T05:46:42Z There, the cells assembled themselves into muscle fibers, began beating in the heart’s rhythm, and ultimately were nurtured by the monkey’s arteries and veins, which grew into the new heart tissue. ‘Very big deal’: UW team uses stem cells to fix monkey hearts 2014-04-30T17:01:25Z The electrodes were designed to pulse and stimulate muscle fibers so that the muscles could pull on tendons in his hand. Ohio surgeons hope chip in man’s brain lets him control paralyzed hand with thoughts 2014-04-30T00:23:00Z The electrodes were designed to pulse and stimulate muscle fibers, so the muscles could pull on tendons in his hand. Ohio surgeons hope chip in man’s brain lets him control paralyzed hand with thoughts 2014-04-30T00:23:27Z It is the arrival of Ca++ in the sarcoplasm that initiates contraction of the muscle fiber by its contractile units, or sarcomeres. Anatomy and Physiology 2013-06-19T00:00:00Z Each of us carries just over 20,000 genes that encode everything from the keratin in our hair down to the muscle fibers in our toes. The Continuing Evolution of Genes 2014-04-28T21:20:18Z Strength training normally increases muscle power by creating microscopic damage to the muscle fibers, which the body then repairs, making them stronger. Does CrossFit push people too hard? 2014-04-28T20:45:28Z With more than 100,000 distinct bundles of muscle fibers, an elephant’s prehensile trunk is just as dexterous as a human or chimpanzee’s hands. Searching For The Elephant's Genius Inside the Largest Brain on Land 2014-02-26T13:00:15Z The unorthodox routine increases Evans’s force production and fast-twitch muscle fibers. Speed Coach Prepares N.F.L. Prospects for Combine 2014-02-21T19:14:39Z The sequence of events that result in the contraction of an individual muscle fiber begins with a signal—the neurotransmitter, ACh—from the motor neuron innervating that fiber. Anatomy and Physiology 2013-06-19T00:00:00Z As people age, she explained, they lose muscle fibers that produce quick powerful bursts before fibers that are engaged in endurance activities such as running or cycling. Tweaking an exercise routine to stay strong after 50 2014-02-10T09:08:19Z Another Mascot Is A Bloody Clown If CrossFitters overexert themselves, they risk getting rhabdomyolysis, a condition where muscle fibers break down and can cause serious kidney damage. Five Things You Need To Know About CrossFit 2014-01-10T18:05:21Z This pull in opposite directions causes tears in the muscle fibers. Make the most of your time in the weight room 2013-12-24T21:04:36Z They focus on building fast-twitch muscle fibers, and they do power lifts that increase the amount of ground forces they generate when they run. Speed Coach Prepares N.F.L. Prospects for Combine 2014-02-21T19:14:39Z As long as Ca++ ions remain in the sarcoplasm to bind to troponin, and as long as ATP is available, the muscle fiber will continue to shorten. Anatomy and Physiology 2013-06-19T00:00:00Z "Physiologically, as we age, we actually lose fast-twitch muscle fibers and therefore increase proportionately our slow twitch or endurance-oriented muscle fibers," Archer said. New York City marathoner aims to add to record consecutive runs 2013-10-28T09:00:36Z Marathoners’ legs, on the other hand, are filled with slow-twitch muscle fibers, which provide the endurance to maintain aerobic activity over an extended period of time. Lady Gaga, You Shouldn't Be Doing It For The Applause. 2013-10-10T19:45:29.597Z There they grew into thin, 0.02-inch strands of muscle fiber — about 20,000 were used to create the burger presented in London. Lab-grown beef taste test: ‘Almost’ like a burger 2013-08-05T18:09:00Z There they grew into thin, 0.02 inch strands of muscle fiber--about 20,000 of those were used to create the burger presented in London. Lab-grown beef taste test: ‘Almost’ like a burger 2013-08-05T18:09:57Z The muscle fiber will repolarize, which closes the gates in the SR where Ca++ was being released. Anatomy and Physiology 2013-06-19T00:00:00Z Gaudin's lawyer, Dominic Gentile, said that on the night of the incident his client was experiencing symptoms related to rhabdomyolysis, a medical condition in which damaged muscle fibers are released into the bloodstream. San Francisco Giants pitcher charged with lewdness in Nevada 2013-07-11T01:26:44Z And they must examine and palpate patients carefully to identify and locate these taut bands of muscle fiber. Myofascial pain syndrome often leaves doctors baffled and patients untreated 2013-06-17T21:04:49Z Using genomics tools, studies in cells, and analyses of biopsies, the researchers showed that the problem hovers around the formation of balloonlike structures called T-tubules deep in the muscle fibers. Dogs Provide Insight Into Rare Genetic Disease 2013-06-13T22:40:00Z Its muscle fibers produce the first fluorescent protein identified in a vertebrate, researchers report in Cell. First Fluorescent Protein Identified in a Vertebrate Animal 2013-06-13T20:45:00.327Z Without the ability to form cross-bridges between the thin and thick filaments, the muscle fiber loses its tension and relaxes. Anatomy and Physiology 2013-06-19T00:00:00Z Over time the differentiated cells merge to form primitive muscle fibers, called myotubes. Engineering the $325,000 In-Vitro Burger 2013-05-12T18:45:18Z Something completely unexpected, given my symptoms: myofascial pain syndrome, a condition caused by muscle fibers that contract but don’t release. Myofascial pain syndrome often leaves doctors baffled and patients untreated 2013-06-17T21:04:49Z DMD is caused by mutation of the gene that helps produce dystrophin, a vital protein that plays a key role in muscle fiber function. FDA seeks more info on Sarepta's muscular dystrophy drug 2013-04-15T21:49:49Z Sixty-nine of them had a serious reaction to niacin, including 29 who developed the muscle fiber condition myopathy. Niacin-statin combo tied to skin, muscle side effects 2013-02-27T21:19:13Z To move an object, referred to as load, the sarcomeres in the muscle fibers of the skeletal muscle must shorten. Anatomy and Physiology 2013-06-19T00:00:00Z It’s likely that you’ve never heard of dystrophin, but it’s responsible for reinforcing and strengthening muscle fibers to gird them against wear and tear. 'Both My Sons Deserve to Live': A Mother's Plea to the FDA 2013-02-07T23:20:27Z Pain signals from taut muscle fibers travel to specific locations on the spinal cord that also receive signals from other parts of the body. Myofascial pain syndrome often leaves doctors baffled and patients untreated 2013-06-17T21:04:49Z No muscle fiber, no skinny calf, no elastic tendon, no enzyme, no brain, no heart. The Kenyan advantage: is it calf elasticity? 2013-02-05T10:00:01Z Using ultrasound imaging, the researchers found that the muscle fibers of the people who regularly climbed trees were drastically different than the fibers of those who did not. Did Human Ancestors "Walk" Up Trees? [Video] 2012-12-31T20:45:00.200Z Here, the biceps brachii contracts as sarcomeres in its muscle fibers are shortening and cross-bridges form; the myosin heads pull the actin. Anatomy and Physiology 2013-06-19T00:00:00Z “Mark is growing muscle fibers one by one, putting them all together and grinding them up,” Forgacs says. Tissue-Engineered Leather Could be Mass-Produced by 2017 2012-09-18T21:45:00.403Z Each cell is attached to muscle fibers along the surface of the skin, and those muscles in turn are connected to a nerve fiber. Shiny! On the Iridescence of Squid 2012-08-25T22:45:00.177Z The reason for success is really a combination of factors, including some genetic attributes; it's what typifies fast twitch muscle fiber traced back to west Africa. Athletics: U.S. coach inspired Jamaican sprint success 2012-08-12T18:37:18Z Similarly, the nervous system recruits more muscle fibers, eventually making us more balanced, fluid, and powerful. How to Work Out Smarter, Not Harder 2012-08-07T13:55:00Z Neural control regulates concentric, eccentric and isometric contractions, muscle fiber recruitment, and muscle tone. Anatomy and Physiology 2013-06-19T00:00:00Z “It might be partly from the manipulation of the muscle fibers, and partly from stimulating circulation to the muscle.” Massage can have significant benefit for muscle pain and other ills, studies find 2012-07-30T19:15:07Z A physical distinction between sprinters and distance runners is seen in their ratios of fast- to slow-twitch muscle fibers. Amantle Montsho Seeks Glory in a Punishing Race 2012-07-07T18:35:44Z An Italian study in 2009 suggested that changes in a specific gene, MYH16, could account for differences in the proteins of muscle fibers controlling the jaw action of humans and chimps. Q & A: Why Are Chimps Stronger Than Humans? 2012-05-21T19:26:02Z Vigorous exercise causes tiny tears in muscle fibers, leading to an immune reaction — inflammation — as the body gets to work repairing the injured cells. Well: How Massage Heals Sore Muscles 2012-02-06T05:01:23Z Each muscle fiber is innervated by only one motor neuron. Anatomy and Physiology 2013-06-19T00:00:00Z Delayed-onset muscle soreness is usually due to cell damage and tears in the muscle fiber, which cause swelling and soreness from an inflammatory response, Melov said. Massage After Exercise Tamps Down Inflammation That Causes Aches 2012-02-01T19:23:40Z Ultrasound probes measured the length of muscle fibers in their legs. Well Blog: Phys Ed: The Dangers of High Heels 2012-01-25T05:01:31Z Muscle biopsies taken before, during and after weight loss show that once a person drops weight, their muscle fibers undergo a transformation, making them more like highly efficient “slow twitch” muscle fibers. The Fat Trap 2011-12-28T15:19:20Z When it comes to the cooked meat, the heating process gelatinizes the collagen in the muscle and causes the muscle fibers to loosen and separate. Eat Raw Food To Lose Weight, Cooked Food Contains More Calories 2011-12-28T05:32:51Z The actual group of muscle fibers in a muscle innervated by a single motor neuron is called a motor unit. Anatomy and Physiology 2013-06-19T00:00:00Z A motor unit is, essentially, the control mechanism of a functioning muscle, composed of a neuron and the particular muscle fibers that that neuron activates. Well Blog: Phys Ed: Staying Strong as We Age 2011-11-09T05:01:53Z Does it fundamentally matter if a woman’s calf muscle fibers shorten and she neglects her tendons while walking, especially if she loves the looks of her Louboutins? Well Blog: Phys Ed: The Dangers of High Heels 2012-01-25T05:01:31Z When you gain muscle mass, the muscle fibers or individual cells get bigger, Udermann said. Muscling past myths 2011-10-12T17:00:07Z This tube is reinforced in different ways by connective tissue, smooth muscle fibers, and fibroelastic tissue. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z A small motor unit is an arrangement where a single motor neuron supplies a small number of muscle fibers in a muscle. Anatomy and Physiology 2013-06-19T00:00:00Z For a team of Brown University researchers, however, these dinner discards are providing some new insights into how our bodies move and protect important muscle fibers. Turkey Legs Tell the Tale of Our Unsung Tendons 2011-09-28T15:15:00.233Z But an isometric exercise actually recruits these weak muscle fibers; it's impossible for them to avoid contracting when the rest of the muscle contracts. A little clench helps the workout 2011-08-15T13:20:04Z If you stop lifting or have your leg in a cast, the muscle fibers don't go away, they just shrink. Muscling past myths 2011-10-12T17:00:07Z The tunica media is composed of intermingled bundles of elastic tissue, smooth muscle fibers, and some fibrous tissue. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z There are thousands of muscle fibers in each muscle, but every six or so fibers are supplied by a single motor neuron, as the axons branch to form synaptic connections at their individual NMJs. Anatomy and Physiology 2013-06-19T00:00:00Z The turkey landing data suggested that tendons can protect surrounding muscle fibers by taking in a good portion of the initial energy from a hard landing—then releasing it back to surrounding muscles more slowly. Turkey Legs Tell the Tale of Our Unsung Tendons 2011-09-28T15:15:00.233Z The muscles sported increased numbers of energy-generating mitochondria and more muscle fibers, indicating that they tired less easily. Missing Gene Helps Mice Run for Hours 2011-07-18T17:00:00Z This may be applied to the neuroglia cells apparently as well as to the muscle fibers. Psychotherapy 2011-06-19T02:00:20.053Z The thick middle coat is composed of muscle fibers and fibroelastic tissue. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z A large motor unit is an arrangement where a single motor neuron supplies a large number of muscle fibers in a muscle. Anatomy and Physiology 2013-06-19T00:00:00Z On the turkeys’ landings, the muscle fibers stiffened against the impact, sending energy to the tendon, which then released it some 2.4 times more slowly back to the muscle fibers. Turkey Legs Tell the Tale of Our Unsung Tendons 2011-09-28T15:15:00.233Z When our muscle contractions caused the loudspeaker to emit loud pops, similar to Lindsley's, we knew the bared surface rested upon one or a few muscle fibers. What bats, bombs, and sharks taught us about hearing [Video] 2011-06-14T12:15:00.407Z As a matter of fact, the capillaries of the brain are wanting in nerves and smooth muscle fibers. Psychotherapy 2011-06-19T02:00:20.053Z Smooth muscle fibers are seen in the middle coat, but, in comparison with the mass of elastic tissue, they appear to have only a limited function. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z The small motor units in the muscle will have smaller, lower-threshold motor neurons that are more excitable, firing first to their skeletal muscle fibers, which also tend to be the smallest. Anatomy and Physiology 2013-06-19T00:00:00Z The cause was a rare cancer, called rhabdomyosarcoma, that attacks muscle fibers, his friend Bill Caplan said. Genaro Hernandez, Twice a World Champion, Dies at 45 2011-06-09T00:24:16Z Such are the painful rewards of delayed onset muscle soreness, or DOMS, a result of microscopic tears to muscle fibers that occur when you run faster, lunge deeper, crunch harder or lift more than usual. A smart recovery can help you gain lasting strength 2011-05-22T23:47:26Z He will attend the combine this week in Indianapolis and interview with teams and let them inspect his hamstring down to the last muscle fiber. Hamstring healed, Irish TE Rudolph pumped for NFL draft 2011-02-20T23:45:00Z There is also much more elastic tissue distributed in firm bundles throughout the media, and there are fewer muscle fibers, giving a more compact appearance to the artery as seen in cross section. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z As more strength is needed, larger motor units, with bigger, higher-threshold motor neurons are enlisted to activate larger muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z We know that the brain sends electrical signals down the spinal cord to muscle fibers, which is what actually causes an animal's muscles to move. Pleasure, reward...and rabbits! Why do animals behave as they do? 2011-02-17T14:15:05.953Z The pacemaker is a little mass of muscle fibers the size and shape of an almond known medically as the sinoatrial node located in the right atrium, one of four chambers of the heart. The new wave of MRI-safe heart devices 2011-02-16T17:15:00.417Z Dr. Rutkove, 46, who has been treating patients with neuromuscular disease for 16 years, took advantage of the way our muscle fibers change electrical currents. $1 Million to Inventor of Tracker for A.L.S. 2011-02-03T20:14:37Z The muscle fibers are increased in number and in size, and there are frequently areas of fibrous myocarditis due to necrosis caused by insufficient nutrition of parts of the muscle. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z A series of action potentials to the muscle fibers is necessary to produce a muscle contraction that can produce work. Anatomy and Physiology 2013-06-19T00:00:00Z All five digits move, controlled by muscle fibers in Nguyen's forearm that send electrical signals to the prosthesis. Amputee raises funds for bionic prostheses 2011-01-11T01:10:09Z "It recruits different types of muscle fibers because it's heavier, forcing your body to become stronger," Romaniello says. P90X Workout Program: Really the Best for Burning Fat, Building Muscles? 2010-12-03T19:00:00Z Assuming this was due to fiber lengths, the researchers used ultrasound to confirm their hypothesis: Individual muscle fibers shortened with high-heel wear. SCIENCE NEWS 2010-08-31T04:00:00Z Gunderson’s team examined individual cells in the wasting muscles and found that there is apoptosis going on, but that other cells are dying, not the muscle fibers or their extra nuclei. Muscles Remember Past Glory 2010-08-18T14:54:00Z In a smooth muscle fiber, external Ca++ ions passing through opened calcium channels in the sarcolemma, and additional Ca++ released from SR, bind to calmodulin. Anatomy and Physiology 2013-06-19T00:00:00Z When injected into a mouse’s leg, the cells fused into the existing muscle fibers, just as they are meant to. Two New Paths to the Dream: Regeneration 2010-08-06T03:06:00Z Instead, ultrasound tests found that the muscle fiber length in the high-heel wearers was 13 percent shorter than in the control group. If those Manolos are a pain, here's why 2010-07-20T17:58:00Z Curious, they used MRI and saw that the Achilles' tendon compensated for muscle fiber length. SCIENCE NEWS 2010-08-31T04:00:00Z The explanation is that the contractions release calcium ions in the cells, enabling the muscle fibers to contract more forcefully. Personal Best: Warm-Ups Before Exercise: Many Methods, Little Research 2010-05-17T20:45:00Z The number of muscle fibers that are part of a motor unit corresponds to the precision of control of that muscle. Anatomy and Physiology 2013-06-19T00:00:00Z In zebra fish the structure of the muscle fiber disintegrates as the cells dedifferentiate. Research Offers Clue Into How Hearts Can Regenerate in Some Species 2010-03-25T00:40:00Z Little did I know that I was tearing muscle fibers off the bone. Blyleven: Injury for one means opportunity for others 2010-03-12T04:21:00Z Mechanical tenderization softens tough cuts of beef by hammering the meat with metal needles or blades that break up muscle fibers and connective tissue. 2009-12-30T05:00:00Z A band of muscle fibers of this sort strengthens the knee joint and gives still more strength to the pars interna. Myology and Serology of the Avian Family Fringillidae A Taxonomic Study Motor neuron axons connect to muscle fibers at a neuromuscular junction. Anatomy and Physiology 2013-06-19T00:00:00Z The muscle fibers converge along the lateral edge of the coracoid and insert on the median crest of the humerus immediately proximal to the pneumatic foramen. Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae A thin aponeurosis lies medial to the muscle fibers. Jaw Musculature of the Mourning and White-winged Doves There was a strap affair around his shoulders, with a set of complicated electronic controls slipped into the muscle fibers. Victory These are much thicker than in the oesophagus; in the mesoblast which 18 forms the greater part of their thickness, muscle fibers are beginning to differentiate. Development of the Digestive Canal of the American Alligator The cells are multinucleated as a result of the fusion of the many myoblasts that fuse to form each long muscle fiber. Anatomy and Physiology 2013-06-19T00:00:00Z The muscles of the stomach "churn" the food in the beginning of the digestive process, after which the circulatory muscle fibers of the small intestines continue the work. Vitality Supreme In the muscle, or muscle-organ, is found a definite grouping of muscle fibers such as will enable a large number of them to act together in the production of the same movement. Physiology and Hygiene for Secondary Schools Tiny nerve fibrils penetrate every muscle, ending in the muscle fibers. The Science of Human Nature A Psychology for Beginners The surrounding mesoblast is differentiated into muscle fibers, figure 7J, ml, which form a fairly distinct layer; inside of this layer is a tall columnar epithelium, ep�, which is thrown into prominent folds. Development of the Digestive Canal of the American Alligator Unlike skeletal muscle fibers, cardiomyocytes are single cells typically with a single centrally located nucleus. Anatomy and Physiology 2013-06-19T00:00:00Z His muscle fiber had drawn strength from the ax and the log-pole, but as yet it had not become heavy with decades of hard labor. Destiny Hydrogen is the same, whether it be a constituent of the ocean, of the air, or of the living muscle fiber. The Doctrine of Evolution Its Basis and Its Scope When the milk fed to nurslings, however, is greatly thinned with water instead of firm muscle fibers and solid lymph glands we find loose and spongy tissues. Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration Press it between two glass slips, and examine by transmitted light, The coiled trichinae may be readily distinguished from the muscle fiber. Scientific American Supplement, No. 601, July 9, 1887 The shapes of some muscles are distinctive; for example, the direction of the muscle fibers is used to describe muscles of the body midline. Anatomy and Physiology 2013-06-19T00:00:00Z These muscle fibers, which are in the form of tiny tubes, are filled with a protein substance. Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish In old animals, and in those parts of the body where there has been much muscular action, the neck and the legs for example, the muscle fibers are tough and hard. Practical Suggestions for Mother and Housewife This phenomenon, which we call dilatation of the womb, is brought about by involuntary contractions of the muscle fibers in its wall, every point of which they draw upward. The Prospective Mother, a Handbook for Women During Pregnancy An alcoholic heart loses its contractile and resisting power, both through morbid changes in its nerve ganglia and in its muscle fibers. A Practical Physiology The muscle fibers feed in on an angle to a long tendon from both sides. Anatomy and Physiology 2013-06-19T00:00:00Z Among the muscle fibers are embedded layers and particles of fat, the quantity of which varies greatly in different animals and depends largely on the age of the animal. Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish Pounding the meat and chopping it are also employed with tough cuts, as they help to break the muscle fibers. Practical Suggestions for Mother and Housewife And yet even in this respect the act of birth is not unique; certain circumstances lead to painful contractions of the muscle fibers in the intestine and less frequently of those in other organs. The Prospective Mother, a Handbook for Women During Pregnancy Arranged in regular order, they very frequently form widely extending membranes, especially in such tube-shaped structures as the blood vessels, the intestine, etc., the walls of which are composed of these smooth muscle fibers. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The muscle fibers feed in on an angle to a long tendon from all directions. Anatomy and Physiology 2013-06-19T00:00:00Z To carry out these methods successfully, severe heat must be applied to the surface of the meat so that the albumin in the ends of the muscle fibers may be coagulated at once. Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish In all meats, much fat is entangled in the network of connective tissue that binds the muscle fibers. School and Home Cooking As in the preceding stages, the muscle fibers of the uterus supply the power in question, and because of this role an observant obstetrician once called them, "living ligatures." The Prospective Mother, a Handbook for Women During Pregnancy When, therefore, these muscle fibers contract, they are able both to reduce the circumference and to shorten the length of the walls of the tube in which they occur. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The muscle fibers feed in on an angle to a long tendon from one side. Anatomy and Physiology 2013-06-19T00:00:00Z In fact, no better method for the preparation of tough pieces of meat and old fowl can be found than this process, for by it the connective tissue and the muscle fibers are softened. Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish Divide both the connective tissue and muscle fiber into two equal portions. School and Home Cooking Such manipulations cause the muscle fibers to contract firmly, and in consequence the blood vessels are tightly closed and bleeding ceases. The Prospective Mother, a Handbook for Women During Pregnancy The heart, however, exhibits an exception, for, though it is provided with striated muscle fibers, the will has no direct influence upon it, its motions being exerted and regulated independently of the will. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The muscle fibers on one side of a tendon feed into it at a certain angle and muscle fibers on the other side of the tendon feed into it at the opposite angle. Anatomy and Physiology 2013-06-19T00:00:00Z In addition to the muscle fibers of fish, which are, of course, composed of protein, fish contains a small quantity of albumin, just as meat does. Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish What conclusion can you draw regarding the effect of dry and moist heat upon muscle fiber? School and Home Cooking CONTRACTION.—The act by which the muscle fibers of the uterus become shorter and press upon its contents. The Prospective Mother, a Handbook for Women During Pregnancy As a rule, such parts as are provided only with smooth muscle fibers are not voluntarily movable, while striated muscle fibers are subject to the will. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics It fills the spaces between muscle fibers, surrounds blood and lymph vessels, and supports organs in the abdominal cavity. Anatomy and Physiology 2013-06-19T00:00:00Z However, the muscle fibers are made up of protein and contain more protein, mineral salts, or ash, and certain substances called extractives, all of which are held in solution by water. Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish One can get an idea of the structure of muscle fiber from some cuts of meat such as the rump. School and Home Cooking With one class of patients the muscle fibers of the womb are peculiarly irritable, whereas in another its lining proves incapable of firmly anchoring the ovum. The Prospective Mother, a Handbook for Women During Pregnancy Moreover, the muscle fibers of the heart are peculiar in that they are destitute of sarcolemma, the naked muscle fibers directly touching each other. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics A muscle fiber is composed of many fibrils, which give the cell its striated appearance. Anatomy and Physiology 2013-06-19T00:00:00Z The nerve filaments, muscle fibers and minute blood vessels in the different areas of the iris reproduce the changing conditions in the corresponding parts or organs. Nature Cure The muscle juice found in muscle fiber not only contains protein, but the walls of muscle fiber and connective tissue contain protein. School and Home Cooking A real auricular fibrillation shows a semiparalysis of the auricles, and during this condition normal systolic contractions do not occur, although there are small rapid twitchings of different muscle fibers in the auricles. Disturbances of the Heart Smooth muscle fibers being, therefore, not subject to the will, are caused to contract, either by local irritation, such as the pressure of the matter contained within the tubes, or by the nervous system. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The sarcomere is the functional unit of the muscle fiber. Anatomy and Physiology 2013-06-19T00:00:00Z The muscle fibers in both meats are surprisingly similar; they're both low in fat, and neither has much collagen, the factor that makes meat fibrous and chewy. The Perdue Chicken Cookbook Compare its flavor with muscle fiber cooked by dry heat. School and Home Cooking Just exactly what changes take place in the muscle fibers of the heart in some of these fevers has not been decided. Disturbances of the Heart The contractions of striated muscle fibers are effected, in the natural course of organic life, only by the influence of the nerves.—ROSENTHAL. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The sarcomere itself is bundled within the myofibril that runs the entire length of the muscle fiber and attaches to the sarcolemma at its end. Anatomy and Physiology 2013-06-19T00:00:00Z The plateau is produced by Ca++ entry though voltage-gated calcium channels in the sarcolemma of cardiac muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z Elastin is found not only in connective tissue, but in the walls of muscle fibers. School and Home Cooking Until 1893, when His described the bundle of muscle fibers which is now known by his name, the transmission of the cardiac stimulus to contraction was not understood. Disturbances of the Heart This is so far interesting that direct irritations, if applied to some point of the heart, are transferred to all the other muscle fibers. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The myosin then pulls the actin filaments toward the center, shortening the muscle fiber. Anatomy and Physiology 2013-06-19T00:00:00Z Although they do not have striations and sarcomeres, smooth muscle fibers do have actin and myosin contractile proteins, and thick and thin filaments. Anatomy and Physiology 2013-06-19T00:00:00Z A dense body is analogous to the Z-discs of skeletal and cardiac muscle fibers and is fastened to the sarcolemma. Anatomy and Physiology 2013-06-19T00:00:00Z Its lower end is continuous with the muscle fibers of the right auricle. Disturbances of the Heart In what form do smooth muscle fibers frequently occur? Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The motor neurons that tell the skeletal muscle fibers to contract originate in the spinal cord, with a smaller number located in the brainstem for activation of skeletal muscles of the face, head, and neck. Anatomy and Physiology 2013-06-19T00:00:00Z Figure 10.24 Muscle Contraction The dense bodies and intermediate filaments are networked through the sarcoplasm, which cause the muscle fiber to contract. Anatomy and Physiology 2013-06-19T00:00:00Z Axons of neurons in the ANS do not form the highly organized NMJs with smooth muscle, as seen between motor neurons and skeletal muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z Single-unit muscle has its muscle fibers joined by gap junctions so that the muscle contracts as a single unit. Anatomy and Physiology 2013-06-19T00:00:00Z What causes the contraction of smooth muscle fibers? Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics You will recall that the diameter of a muscle fiber can be up to 100 μm, so these T-tubules ensure that the membrane can get close to the SR in the sarcoplasm. Anatomy and Physiology 2013-06-19T00:00:00Z Because the muscle fibers are not constrained by the organization and stretchability limits of sarcomeres, visceral smooth muscle has a stress-relaxation response. Anatomy and Physiology 2013-06-19T00:00:00Z This can most evidently be observed in the uterus at puberty, which responds to increased estrogen levels by producing more uterine smooth muscle fibers, and greatly increases the size of the myometrium. Anatomy and Physiology 2013-06-19T00:00:00Z These cells are located outside the sarcolemma and are stimulated to grow and fuse with muscle cells by growth factors that are released by muscle fibers under certain forms of stress. Anatomy and Physiology 2013-06-19T00:00:00Z Are the striated muscle fibers voluntary or involuntary? Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics The contraction of a striated muscle fiber occurs as the sarcomeres, linearly arranged within myofibrils, shorten as myosin heads pull on the actin filaments. Anatomy and Physiology 2013-06-19T00:00:00Z Satellite cells can regenerate muscle fibers to a very limited extent, but they primarily help to repair damage in living cells. Anatomy and Physiology 2013-06-19T00:00:00Z If a cell is damaged to a greater extent than can be repaired by satellite cells, the muscle fibers are replaced by scar tissue in a process called fibrosis. Anatomy and Physiology 2013-06-19T00:00:00Z Skeletal muscle fibers are organized into groups called fascicles. Anatomy and Physiology 2013-06-19T00:00:00Z How do they differ from striated muscle fibers? Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics Ca++ ions are pumped out of the sarcoplasm into the SR, and cross-bridge cycling stops, returning the muscle fibers to their resting state. Anatomy and Physiology 2013-06-19T00:00:00Z How would muscle contractions be affected if ATP was completely depleted in a muscle fiber? Anatomy and Physiology 2013-06-19T00:00:00Z What factors contribute to the amount of tension produced in an individual muscle fiber? Anatomy and Physiology 2013-06-19T00:00:00Z When they relax, the sphincters’ concentrically arranged bundles of muscle fibers increase the size of the opening, and when they contract, the size of the opening shrinks to the point of closure. Anatomy and Physiology 2013-06-19T00:00:00Z Give other peculiarities of the muscle fibers of the heart. Hygienic Physiology : with Special Reference to the Use of Alcoholic Drinks and Narcotics Two criteria to consider when classifying the types of muscle fibers are how fast some fibers contract relative to others, and how fibers produce ATP. Anatomy and Physiology 2013-06-19T00:00:00Z Due to this design, the muscle fibers in a pennate muscle can only pull at an angle, and as a result, contracting pennate muscles do not move their tendons very far. Anatomy and Physiology 2013-06-19T00:00:00Z However, because a pennate muscle generally can hold more muscle fibers within it, it can produce relatively more tension for its size. Anatomy and Physiology 2013-06-19T00:00:00Z In some pennate muscles, the muscle fibers wrap around the tendon, sometimes forming individual fascicles in the process. Anatomy and Physiology 2013-06-19T00:00:00Z Only very few cell types in the body do not divide, including nerve cells, skeletal muscle fibers, and cardiac muscle cells. Anatomy and Physiology 2013-06-19T00:00:00Z Using these criteria, there are three main types of skeletal muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z Attached cells form long, branching cardiac muscle fibers that are, essentially, a mechanical and electrochemical syncytium allowing the cells to synchronize their actions. Anatomy and Physiology 2013-06-19T00:00:00Z This second motor neuron is responsible for causing muscle fibers to contract. Anatomy and Physiology 2013-06-19T00:00:00Z The axon terminates on muscle fibers at the neuromuscular junction. Anatomy and Physiology 2013-06-19T00:00:00Z When the lower motor neuron excites the muscle fiber, it contracts. Anatomy and Physiology 2013-06-19T00:00:00Z The primary metabolic pathway used by a muscle fiber determines whether the fiber is classified as oxidative or glycolytic. Anatomy and Physiology 2013-06-19T00:00:00Z The axons will also branch to innervate multiple muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z Together, the motor neuron and all the muscle fibers that it controls make up a motor unit. Anatomy and Physiology 2013-06-19T00:00:00Z Some may contain up to 1000 muscle fibers, such as in the quadriceps, or they may only have 10 fibers, such as in an extraocular muscle. Anatomy and Physiology 2013-06-19T00:00:00Z This is a specialized synaptic structure at which multiple axon terminals synapse with the muscle fiber sarcolemma. Anatomy and Physiology 2013-06-19T00:00:00Z However, cardiac muscle fibers are shorter than skeletal muscle fibers and usually contain only one nucleus, which is located in the central region of the cell. Anatomy and Physiology 2013-06-19T00:00:00Z It helps establish the resting membrane potential in neurons and muscle fibers after membrane depolarization and action potentials. Anatomy and Physiology 2013-06-19T00:00:00Z The pulmonary capillary network consists of tiny vessels with very thin walls that lack smooth muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z The upper two-thirds of the esophagus consists of both smooth and skeletal muscle fibers, with the latter fading out in the bottom third of the esophagus. Anatomy and Physiology 2013-06-19T00:00:00Z There is also a small population of neurons that control vasodilation in the vessels of the brain and skeletal muscles by relaxing the smooth muscle fibers in the vessel tunics. Anatomy and Physiology 2013-06-19T00:00:00Z Cardiac muscle fibers also possess many mitochondria and myoglobin, as ATP is produced primarily through aerobic metabolism. Anatomy and Physiology 2013-06-19T00:00:00Z One motor neuron connects to multiple muscle fibers within a target muscle. Anatomy and Physiology 2013-06-19T00:00:00Z The wall of a capillary consists of the endothelial layer surrounded by a basement membrane with occasional smooth muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z This principle states that, within physiological limits, the force of heart contraction is directly proportional to the initial length of the muscle fiber. Anatomy and Physiology 2013-06-19T00:00:00Z The nerves then follow the bronchi in the lungs and branch to innervate muscle fibers, glands, and blood vessels. Anatomy and Physiology 2013-06-19T00:00:00Z A gap junction forms channels between adjacent cardiac muscle fibers that allow the depolarizing current produced by cations to flow from one cardiac muscle cell to the next. Anatomy and Physiology 2013-06-19T00:00:00Z The wall’s middle, muscular coat is made of smooth muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z The tunica externa in veins also contains groups of smooth muscle fibers. Anatomy and Physiology 2013-06-19T00:00:00Z A blood vessel with a few smooth muscle fibers and connective tissue, and only a very thin tunica externa conducts blood toward the heart. Anatomy and Physiology 2013-06-19T00:00:00Z |
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