| 单词 | muscle contraction |
| 例句 | Lethal electric fences, however, use a continuous current that can make a person lock on to the wire as voltage causes involuntary muscle contractions, paralysis, and death. Escape from Camp 14: One Man's Remarkable Odyssey from North Korea to Freedom in the West 2013-03-26T00:00:00Z He smiled, but it was merely a muscle contraction. The City Beautiful 2021-10-05T00:00:00Z These difficulties persisted into adulthood: The pain got worse, particularly after the birth of her son, Arthur, in 2011; she had problems with her vision and experienced involuntary muscle contractions in her neck. Selma Blair Wants You to See Her Living With Multiple Sclerosis 2021-10-13T04:00:00Z Painful muscle contractions in the esophagus lead rabies victims to avoid eating and drinking, or even swallowing their own saliva, which eventually causes "foaming at the mouth." More "disease" than "Dracula" — how the vampire myth was born 2021-10-25T04:00:00Z The research foundation defines dystonia as “a neurological disorder characterized by involuntary muscle contractions and postures.” Critic?s Notebook: Dystonia, Which Struck Glenn Gould and Other Musicians 2012-03-13T22:19:34Z It all comes down to the difference between two schools of thought on cat purring: The myoelastic-aerodynamic theory of phonation and the active muscle contractions theory. New research is changing our understanding of cat emotions, from purring to their facial expressions 2023-11-03T04:00:00Z The scientists suspect, that this allows the thick filament to sense and process numerous muscle-regulating signals and thus to regulate the strength of muscle contraction depending on the sarcomere region. Breakthrough discovery sheds light on heart and muscle health 2023-11-01T04:00:00Z According to the Mayo Clinic, these types of seizure — also known as tonic-clonic seizures — cause a loss of consciousness and violent muscle contractions. Brooke Shields had a grand mal seizure. Bradley Cooper was by her side as it went down 2023-11-01T04:00:00Z The team previously explored how cardiac muscle contractions are affected by temperature, determining that our heart can contract efficiently within the body temperature range. New evidence explains how warming-up enhances muscle performance 2023-10-25T04:00:00Z After two months of wheel exercises, amounting to some 30,000 cycles, the researchers found the fiber was still robust and resistant to fatigue, and could also transmit light efficiently to trigger muscle contraction. Soft optical fibers block pain while moving and stretching with the body 2023-10-19T04:00:00Z Scientists who subscribed to the active muscle contractions theory believed that when cats purr in response to being comfortable or, conversely, to feeling stressed, they do so as a voluntary muscle contraction. New research is changing our understanding of cat emotions, from purring to their facial expressions 2023-11-03T04:00:00Z The latter can form links between the filaments, whereas myosin, the so-called motor protein interacts with the thin filament to generate force and muscle contraction. Breakthrough discovery sheds light on heart and muscle health 2023-11-01T04:00:00Z As we age, some of these connections are lost, causing muscle contractions to become less powerful and muscles to atrophy. Restoring nerve-muscle connections boosts strength of aging mice, study finds 2023-10-11T04:00:00Z A recent study, led by Austrian voice scientist Christian T. Herbst at the University of Vienna, now demonstrates that these cyclic muscle contractions are not needed to generate cat purrs. Cats purr differently than previously thought 2023-10-04T04:00:00Z “So if you block inhibition of muscle contraction, then you get excessive muscle contraction.” Celine Dion has stiff person syndrome. What exactly is it? 2023-10-03T04:00:00Z By isolating the larynx this way, the scientists guaranteed that any sound produced was occurring without muscle contractions or any input from the brain. How do cats purr? New finding challenges long-held assumptions 2023-10-03T04:00:00Z But these proteins may go into overdrive, causing inflammation; and some also regulate the coordinated, forceful uterine muscle contractions during labor. How much heat is dangerous during pregnancy? 2023-09-27T04:00:00Z But the U.A.B. study is the first to clearly show that the organs also filter creatinine, a byproduct of muscle contractions that must be removed from the blood. Surgeons Improve Function of Kidneys Transplanted From Genetically Altered Pigs 2023-08-16T04:00:00Z Data from a controlled laboratory experiment shows that the domestic cat larynx can produce impressively low-pitched sounds at purring frequencies without any cyclical neural input or repetitive muscle contractions being needed. Cats purr differently than previously thought 2023-10-04T04:00:00Z All my homework on experiencing transcendent boudoir bliss boils down to three key components: brain hormone production, blood flow to nerve clusters and pelvic muscle contraction training. How to have better orgasms, according to science 2023-07-23T04:00:00Z Without any active neural control, all eight larynges produced self-sustaining oscillations at frequencies between 25 and 30 Hz—suggesting purring doesn’t necessarily require active muscle contractions. How do cats purr? New finding challenges long-held assumptions 2023-10-03T04:00:00Z This junction between motor nerves and muscle tissue is where brain signals are transmitted for muscle contraction and movement. How to Keep Muscles Strong as You Age 2023-07-02T04:00:00Z Instead, they are somehow born with the ability to paint what they see onto their skin using thousands of tiny muscle contractions. Cuttlefish Are Constantly Reinventing Themselves 2023-06-28T04:00:00Z The algorithm was able to account for slight variations in the direction and speed of each muscle contraction and relaxation. A Paralyzed Man Can Walk Naturally Again With Brain and Spine Implants 2023-05-24T04:00:00Z Pickle juice or yellow mustard also work quickly to ease muscle contractions. Jewel weed can prevent poison ivy rash 2023-05-24T04:00:00Z The so-called active muscle contraction hypothesis holds that domestic cats actively contract and relax their laryngeal muscles about 30 times per second in order to purr. How do cats purr? New finding challenges long-held assumptions 2023-10-03T04:00:00Z Much of muscle contraction occurs without conscious thought and is necessary for survival, like the contraction of the heart or peristalsis, which pushes food through the digestive system. Fundamentals of Biology 2015-01-01T00:00:00Z For example, in the mechanical work of muscle contraction, ATP supplies energy to move the contractile muscle proteins. Concepts of Biology 2013-04-25T00:00:00Z This results in two molecules that each carry three carbon atoms plus two molecules of ATP, which cells use as fuel in all sorts of processes, including muscle contraction. Evolution Turns These Knobs to Make a Hummingbird Hyperquick and a Cavefish Sluggishly Slow 2023-02-24T05:00:00Z Dystonia is a movement disorder characterized by persistent or intermittent muscle contractions, which cause abnormal, often repetitive movements or positions, Hyman explained. Her Foot Looked Normal. What Was Causing the Excruciating Pain? 2023-02-07T05:00:00Z And sea moss gel contains large amounts of potassium, an essential mineral that supports muscle contraction and blood pressure control. Is a spoonful of sea moss the key to good health? 2023-01-31T05:00:00Z Voluntary muscle contraction is used to move the body and can be finely controlled, such as movements of the finger or gross movements like those of the biceps and triceps. Fundamentals of Biology 2015-01-01T00:00:00Z The responses include increased heart rate, breathing rate, cardiac muscle contractions, and blood- glucose levels. Concepts of Biology 2013-04-25T00:00:00Z Focal dystonia is a neurological condition in which there are involuntary muscle contractions in one body part. Are "the yips" real or psychosomatic? Here's what experts say 2023-01-20T05:00:00Z One folder marked "passports" contains passport scans for pupils and parents on school trips going back to 2011, whereas another marked "contract" contains contractual offers made to staff alongside teaching documents on muscle contractions. Schools across the UK hit by cyber attack and documents leaked 2023-01-06T05:00:00Z The transient receptor potential channels on cells in our mouth and throat react quickly to mustard and reverse the nerve misfiring that leads to muscle contractions. Athlete’s foot bleach treatment is controversial 2022-11-02T04:00:00Z While they differ in many regards, they all use actin sliding against myosin to create muscle contraction and relaxation. Fundamentals of Biology 2015-01-01T00:00:00Z In a study involving rats, these sweeteners were shown to increase bladder muscle contraction, which causes an urge to urinate. Advice | Ask a Doctor: Why do I pee so much at night? 2022-10-03T04:00:00Z People with this condition may experience loss of sensation, muscle contractions and difficulty walking. Alan Jackson postpones upcoming weekend concerts to deal with 'health issues' 2022-10-05T04:00:00Z One advantage is speed because small muscle contractions can produce large movements of limbs in a short period of time. College Physics for AP Courses 2015-08-12T00:00:00Z How and why did this event influence cardiac muscle contraction? Biology for AP Courses 2022-06-09T00:00:00Z All skeletal muscle and many smooth muscle contractions are stimulated by the binding of the neurotransmitter acetylcholine. Fundamentals of Biology 2015-01-01T00:00:00Z Glycogen is broken down into glucose when glucose levels are low or when needed for muscle contraction. Miller & Levine Biology 2018-01-01T00:00:00Z Calcium is vitally important in bone health, muscle contraction, hormone secretion, and neurotransmitter release. Anatomy and Physiology 2013-06-19T00:00:00Z The second is that muscle contractions during activity allow your cells to take up glucose whether insulin is available or not. Answers to your questions about blood sugar, body comments and more 2022-05-30T04:00:00Z Muscle contraction speed increases as the autonomic nervous system responds to local conditions and makes muscle contraction speed up or slow down. Biology for AP Courses 2022-06-09T00:00:00Z There are three general types of muscle contractions, matching the types of muscles: skeletal muscle contractions, heart muscle contractions, and smooth muscle contractions. Fundamentals of Biology 2015-01-01T00:00:00Z “Every muscle contraction counts” and contributes to building strength, assuming you lift a weight near the maximum you can handle and it lasts at least three seconds, he said. Stronger Muscles in 3 Seconds a Day 2022-03-02T05:00:00Z Calcium ions, for example, are essential for muscle contractions and controlling the flow of other ions involved in the transmission of nerve impulses. Anatomy and Physiology 2013-06-19T00:00:00Z The most common type of eye twitch is a series of muscle contractions called eyelid myokymia, which produces involuntary and intermittent contractions of the eyelid, typically the lower one. Why Is My Eyelid Twitching? 2021-12-28T05:00:00Z Muscle contraction speed increases as the central nervous system responds to local conditions and makes muscle contraction speed up or slow down. Biology for AP Courses 2022-06-09T00:00:00Z CMT often affects the peripheral limbs and can result in smaller, weaker muscles, loss of sensation and muscle contractions. Proud Paralympian: Embracing disability helped Team USA's Jamal Hill blossom in Tokyo 2021-12-15T05:00:00Z In the same study, some volunteers agreed to have a pressure-sensing probe inserted into their colon to measure intestinal muscle contractions before and after drinking a cup of Joe. Why Does Coffee Make Me Poop? 2021-11-30T05:00:00Z Hypocalcemia can result in problems with blood coagulation, muscle contraction, nerve functioning, and bone strength. Anatomy and Physiology 2013-06-19T00:00:00Z He has experienced personal challenges, like confronting his 2002 diagnosis for dystonia, a movement disorder that causes involuntary and uncontrollable muscle contractions and cramping. Boston Marathon ironman Ben Beach eyeing extension of streak 2021-10-08T04:00:00Z It is used to build the organic molecules that are required for cells and tissues; it provides energy for muscle contraction and for the transmission of electrical signals in the nervous system. Biology for AP Courses 2022-06-09T00:00:00Z The scientists were interested in studying the enzymes that contribute to muscle contraction. Edmond Fischer, who won Nobel Prize for discoveries about proteins in cells, dies at 101 2021-08-31T04:00:00Z Potassium assists multiple vital functions, including heart and kidney function, nerve transmission, and muscle contraction. Essential vitamins and minerals for seniors | Provided by Koelsch Communities 2021-08-16T04:00:00Z It contains a lubricating fluid that allows for smooth motions of the tendon during muscle contraction and joint movements. Anatomy and Physiology 2013-06-19T00:00:00Z Activating these receptors overwhelms the muscle contractions that lead to hiccups. This simple hiccup remedy uses apple cider vinegar 2021-05-20T04:00:00Z Related to these are Golgi tendon organs, which are tension receptors that detect the force of muscle contraction. Biology for AP Courses 2022-06-09T00:00:00Z One option is a nonsurgical technique that kills off fat cells with radio-frequency and builds muscle by using high-intensity focused electromagnetic energy to create rapid muscle contractions. A little extra help getting ready for swimsuit season | Provided by Glow Medispa 2021-04-23T04:00:00Z In someone with normal nerves and muscles, each identical shock will produce an identical muscle contraction. Her Eyelid Drooped and She Kept Getting Weaker. What Was Going On? 2021-03-04T05:00:00Z All of these cellular changes result in the ability to sustain low levels of muscle contractions for greater periods without fatiguing. Anatomy and Physiology 2013-06-19T00:00:00Z After the gut infection cleared, the mice ingested the antigens again—and this time, they seemed to experience abdominal pain, as measured by stomach muscle contractions. What causes IBS pain? It may be a local immune reaction 2021-01-13T05:00:00Z Unconscious proprioceptive signals run from the spinal cord to the cerebellum, the brain region that coordinates muscle contraction, rather than to the thalamus, like most other sensory information. Biology for AP Courses 2022-06-09T00:00:00Z This video shows a beating heart with a protein involved in muscle contraction labeled in green. A New Cell Map of the Human Heart 2020-11-13T05:00:00Z But a few years ago, he was forced into early retirement after his tremors, a condition involving involuntary muscle contractions that cause shaking in his hands, made it impossible for him to work. Metal fabricator turns skills to art after move to Montana 2020-09-12T04:00:00Z 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 And several of her falls were likely due to dystonia, involuntary muscle contractions that result in abnormal posture and impaired movements. She fell more than 30 times. For three years, doctors couldn’t explain why. 2020-04-24T04:00:00Z Epinephrine and norepinephrine increase heart rate, breathing rate, cardiac muscle contractions, blood pressure, and blood glucose levels. Biology for AP Courses 2022-06-09T00:00:00Z They aren’t the grand mal type known for causing a loss of consciousness and violent muscle contractions. Family hopes to raise at least $20,000 for a seizure dog 2020-02-22T05:00:00Z In one study using rats, caffeine triggered smooth muscle contraction, so it is possible that caffeine directly promotes bowel activity. The biology of coffee, one of the world’s most popular drinks 2020-01-26T05:00:00Z Creatine phosphate provides about the first 15 seconds of ATP at the beginning of muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z It said in a statement that he had lived for some time with dystonia, which causes involuntary muscle contractions. Caroll Spinney, Big Bird’s Alter Ego on ‘Sesame Street,’ Is Dead at 85 2019-12-08T05:00:00Z They secrete cortisol and aldosterone, which increase heart rate, breathing rate, muscle contractions, blood pressure, and blood glucose as short-term stress response. Biology for AP Courses 2022-06-09T00:00:00Z A recent study by the Force Science Institute, the research and consulting group, cited involuntary muscle contractions as one of the potential main factors in accidental shootings by police. Accidental shootings by police expose training shortfalls 2019-12-09T05:00:00Z The Sesame Workshop said in a statement that the legendary puppeteer lived for some time with dystonia, which causes involuntary muscle contractions. Sesame Street puppeteer Caroll Spinney dies at age 85 2019-12-08T05:00:00Z The release of calcium ions initiates muscle contractions. Anatomy and Physiology 2013-06-19T00:00:00Z He was immobilized and shackled in the fetal position, as he described it, for “countless hours,” experiencing muscle contractions. What the C.I.A.’s Torture Program Looked Like to the Tortured 2019-12-04T05:00:00Z They secrete epinephrine and norepinephrine, which increase heart rate, breathing rate, muscle contractions, blood pressure, and blood glucose as long-term stress response. Biology for AP Courses 2022-06-09T00:00:00Z The pain isn’t searing — unlike, say, sticking your finger in a wall socket — but isn’t pleasant: a brief muscle contraction, then numbness. New Electric Eel Is Most Shocking Yet 2019-09-10T04:00:00Z Beyond being embarrassing, the muscle contractions can be physically exhausting. Why Do We Hiccup? 2019-08-15T04:00:00Z How would muscle contractions be affected if skeletal muscle fibers did not have T-tubules? Anatomy and Physiology 2013-06-19T00:00:00Z Anticholinergic medications target acetylcholine, an important chemical messenger in the parasympathetic nervous system that dilates blood vessels and regulates muscle contractions, bodily secretions and heart rate, among other functions. In older adults, some drugs may produce symptoms that imitate dementia 2019-07-26T04:00:00Z They secrete cortisol and aldosterone, which increase heart rate, breathing rate, muscle contractions, blood pressure, and blood glucose as long-term stress response. Biology for AP Courses 2022-06-09T00:00:00Z L. kimuraorum is different in that it is able to generate enough pressure in its body to emit the sound through a simple muscle contraction, the team reports this week in Current Biology. Watch a tiny worm make one of the loudest sounds in the ocean 2019-07-09T04:00:00Z Recently, scientists tested coffee in rats and found that both decaf and high-test increase the power of intestinal muscle contractions. How does coffee impact digestion? 2019-05-30T04:00:00Z These ligaments thus stabilize the hip joint and allow you to maintain an upright standing position with only minimal muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z Its vibrations cause an automatic reflex muscle contraction of 30 to 50 a second, which the company touts as a great time-saver due to the many muscle groups that are activated at the same time. One of the quietest places at Augusta National is also one of the most unlikely—the (often empty) Masters locker room - Golf Digest 2019-04-12T04:00:00Z The sarcolemma is the site of action potential conduction, which triggers muscle contraction. Biology for AP Courses 2022-06-09T00:00:00Z Stirring from wind, much like a muscle contraction, allows gases to mix and reach important places like a termite nest or human blood. What Termites Can Teach Us About Cooling Our Buildings 2019-03-26T04:00:00Z Above that is a layer of reflective iridophore cells; some of these can be switched on and off by muscle contractions that hide or reveal their sparkly contents. Moving skin beyond the biological 2018-11-20T05:00:00Z This heat is very noticeable during exercise, when sustained muscle movement causes body temperature to rise, and in cases of extreme cold, when shivering produces random skeletal muscle contractions to generate heat. Anatomy and Physiology 2013-06-19T00:00:00Z Modulations in muscle contraction determine whether or not the cells’ pigments are displayed, producing a changing patterning system that the animal uses for camouflage. A living display system resolved pixel by pixel 2018-10-16T04:00:00Z In an open system, an elongated beating heart pushes the hemolymph through the body and muscle contractions help to move fluids. Biology for AP Courses 2022-06-09T00:00:00Z That may prevent them from going into overdrive and causing unwanted spontaneous muscle contractions — cramps in your legs or spasms in your esophagus. Another Milk of Magnesia success story 2018-09-07T04:00:00Z Changes in genes associated with muscle contractions around the spleen and with responses to low oxygen levels also turned up. A group of people with an amphibious life have evolved traits to match 2018-04-19T04:00:00Z Although the currents generated by ions moving through these channel proteins are very small, they form the basis of both neural signaling and muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z Her son gets botoxed injected in his shoulders to treat involuntary muscle contractions. Woman cares for 3 family members with Huntington’s disease 2018-03-26T04:00:00Z Because skeletal muscle contraction aids in venous blood flow, it is important to get up and move frequently after long periods of sitting so that blood will not pool in the extremities. Biology for AP Courses 2022-06-09T00:00:00Z In people with this disorder, involuntary muscle contractions or uncontrolled movements develop without warning. One day, a serious athlete couldn’t walk straight. Doctors were stumped. 2018-02-16T05:00:00Z Cells in airways, for instance, need this flow of potassium ions to control muscle contractions and keep a mouse breathing. Centipedes eat animals 15 times their size thanks to this powerful toxin, study finds 2018-01-22T05:00:00Z This zone where thin and thick filaments overlap is very important to muscle contraction, as it is the site where filament movement starts. Anatomy and Physiology 2013-06-19T00:00:00Z Most forehead wrinkles are not initiated by a loss of collagen but by repetitive muscle contractions, such as furrowing the brow. REVIEW: EndyMed’s Newa revives skin to youthful glow 2018-01-23T05:00:00Z For example, in the mechanical work of muscle contraction, ATP supplies the energy to move the contractile muscle proteins. Biology for AP Courses 2022-06-09T00:00:00Z When treating movement disorders, patients may experience tingling and muscle contraction, says neurosurgeon Tipu Aziz of the University of Oxford. An Electrical Brain Switch Shuts Off Food Cravings 2017-12-19T05:00:00Z With enough power, he figured the weapon would be able to jam the neural system, inducing debilitating muscle contractions. Special Report: The garage science behind the stun gun that changed policing 2017-09-20T04:00:00Z This reaction is catalyzed by the enzyme creatine kinase and occurs very quickly; thus, creatine phosphate-derived ATP powers the first few seconds of muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z Unfortunately, the drug ended up severely imbalancing his electrolytes, which can lead to dehydration, headaches, vision and cardiac problems, muscle contractions and, in extreme cases, seizures. Tweaking brains with ‘smart drugs’ to get ahead in Silicon Valley 2017-06-09T04:00:00Z Muscle contraction speed increases as the enteric nervous system responds to local conditions and makes muscle contraction speed up or slow down. Biology for AP Courses 2022-06-09T00:00:00Z This neural highway regulates a handful of involuntary functions, including heart rate, breathing and the muscle contractions that push food through the gut. The shock tactics set to shake up immunology 2017-05-02T04:00:00Z With enough power, he figured the weapon would be able to jam the neural system, inducing debilitating muscle contractions. Special Report: The garage science behind the stun gun that changed policing 2017-09-20T04:00:00Z To compensate, muscles store small amount of excess oxygen in proteins call myoglobin, allowing for more efficient muscle contractions and less fatigue. Anatomy and Physiology 2013-06-19T00:00:00Z Stokes, who is based in New York, trains her clients to focus on every muscle contraction through her Stoked method, a mindfulness practice that she encourages them to use throughout the day. The sweat and strain of weightlifting is like meditation for me 2017-01-27T05:00:00Z Muscle contraction speed increases as the somatic nervous system responds to local conditions and makes muscle contraction speed up or slow down. Biology for AP Courses 2022-06-09T00:00:00Z When he was 8, Kimong started having monthly grand mal seizures, which are characterized by loss of consciousness and violent muscle contractions. Medicaid’s Data Gets an Internet-Era Makeover 2017-01-09T05:00:00Z Most shellfish allergens are proteins that are involved in muscle contraction. Sinister Shellfish 2016-12-12T05:00:00Z The exact causes of muscle fatigue are not fully known, although certain factors have been correlated with the decreased muscle contraction that occurs during fatigue. Anatomy and Physiology 2013-06-19T00:00:00Z Meston is talking about the sympathetic nervous system, which is responsible for subconscious muscle contractions that get us ready for the flight or fight mode, like heart rate and blood pressure. 100 Women 2016: Meet the orgasm doctors - BBC News 2016-12-01T05:00:00Z Using peristalsis, or wave-like smooth muscle contractions, the muscles of the esophagus push the food towards the stomach. Biology for AP Courses 2022-06-09T00:00:00Z Spasmodic dysphonia, long believed to be a psychological problem, is now considered to be part of a family of conditions called dystonias—neurological movement disorders characterized by involuntary muscle contractions. The Brain Wiring Behind a Frustrating Speech Disorder 2016-10-31T04:00:00Z It affects the enzymes that control muscle contraction.. A Mosquito Killer, Unwelcome to Many 2016-09-17T04:00:00Z ATP is needed for normal muscle contraction, and as ATP reserves are reduced, muscle function may decline. Anatomy and Physiology 2013-06-19T00:00:00Z Opioids bind to a receptor that makes the gastrointestinal tract go awry, decreasing the secretion of fluids and inhibiting the muscle contractions that propel waste. The drug industry’s answer to opioid addiction: More pills 2016-10-15T04:00:00Z Multiple stomach chambers in ruminant animals allow stronger smooth muscle contractions, which break down plant material. Biology for AP Courses 2022-06-09T00:00:00Z These tests also showed excess fluid in the brain, an underdeveloped cerebellum, an absence of folds in the cerebral cortex, and abnormal voluntary and involuntary muscle contractions. Zika Causes Widespread Damage to Fetal Brain 2016-10-03T04:00:00Z It affects the enzymes that control muscle contraction, not hormones that cause muscles to contract. A Mosquito Killer, Unwelcome to Many 2016-09-17T04:00:00Z Intense muscle activity results in an oxygen debt, which is the amount of oxygen needed to compensate for ATP produced without oxygen during muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z The order of muscle contractions during that shift is as important as activating the muscles themselves. Learn this power move from Dustin Johnson's trainer - Golf Digest 2016-08-19T04:00:00Z They secrete epinephrine and norepinephrine, which increase heart rate, breathing rate, muscle contractions, blood pressure, and blood glucose as short-term stress response. Biology for AP Courses 2022-06-09T00:00:00Z Myasthenia gravis occurs when the immune system attacks the nerve receptors that control muscle contractions. Surgery Effective Against Immune Disorder That Weakens Muscles 2016-08-11T04:00:00Z Still, the idea that muscle fatigue begins instantaneously and with each muscle contraction may say plenty about why Bolt is so hard to beat. The Science Behind Sprinter Usain Bolt’s Speed 2016-07-28T04:00:00Z However, muscle tension also is generated when the muscle is contracting against a load that does not move, resulting in two main types of skeletal muscle contractions: isotonic contractions and isometric contractions. Anatomy and Physiology 2013-06-19T00:00:00Z Survival rates in King County reached 62 percent in 2013 for bystander-witnessed cardiac arrests caused by ventricular fibrillation, or uncontrolled muscle contractions in the heart. CPR app turns Seattle bystanders into first responders 2016-05-31T04:00:00Z In a later section, knowledge of the nervous system will be used to understand the musculoskeletal system because muscle contraction depends on neural input. Biology for AP Courses 2022-06-09T00:00:00Z Symptoms include agitation, tremor, confusion, muscle contractions and elevated blood pressure. No clear evidence fish oil linked to prostate cancer 2016-05-29T04:00:00Z The toxin blocks the release of substances at nerve endings, reducing muscle contraction and the transmission of pain signals, the researchers explained. Botox Can Be Used for Chronic Migraine, Experts Say 2016-04-18T04:00:00Z This increasing activation of motor units produces an increase in muscle contraction known as recruitment. Anatomy and Physiology 2013-06-19T00:00:00Z From there, the sleeve uses electrical impulses to trigger muscle contractions that allow Burkhart to accomplish the hand movement he’s thinking of. A paralyzed man’s brain implant let him move his fingers to play a guitar video game 2016-04-13T04:00:00Z In the sliding filament model of muscle contraction, the thicker myosin filaments have cross-bridges that attach and detach to thinner actin filaments. Biology for AP Courses 2022-06-09T00:00:00Z Eleven different genes showed evidence of mutations occurring over generations that boosted the animal’s muscle contraction, stress response and regulation of energy-releasing processes, all of which beefed up the big cat’s running prowess. In DNA, Clues to the Cheetah’s Speed and Hurdles 2016-02-26T05:00:00Z A small molecule that reduces cardiac muscle contraction prevents a certain type of heart disease in mice. A small-molecule inhibitor of sarcomere contractility suppresses hypertrophic cardiomyopathy in mice | Science 2016-02-04T05:00:00Z 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 Fidyka had a lot of spasticity—uncontrolled muscle contractions suggesting extensive spinal damage—and he seemed very depressed. Can an Unorthodox Operation Cure Paraplegia? 2016-01-25T05:00:00Z Actin is a globular contractile protein that interacts with myosin for muscle contraction. Biology for AP Courses 2022-06-09T00:00:00Z The therapy consisted of placing a molecule involved in muscle contraction into the cells. Treatment for 'Weak Heart' in Dogs Shows Promise 2016-01-17T05:00:00Z A small molecule that reduces cardiac muscle contraction prevents a certain type of heart disease in mice. A small-molecule inhibitor of sarcomere contractility suppresses hypertrophic cardiomyopathy in mice | Science 2016-02-04T05:00:00Z Normal muscle contraction is more sustained, and it can be modified by input from the nervous system to produce varying amounts of force; this is called a graded muscle response. Anatomy and Physiology 2013-06-19T00:00:00Z Neurons are only a portion of what is cumulatively called a “nerve bundle”; they carry the electric impulses that govern muscle contraction or register sensation. Can an Unorthodox Operation Cure Paraplegia? 2016-01-25T05:00:00Z The sliding filament theory of muscle contraction was developed to fit the differences observed in the named bands on the sarcomere at different degrees of muscle contraction and relaxation. Biology for AP Courses 2022-06-09T00:00:00Z A long noncoding RNA encodes a small peptide that activates a calcium pump regulating muscle contraction. A peptide encoded by a transcript annotated as long noncoding RNA enhances SERCA activity in muscle | Science 2016-01-14T05:00:00Z It's important for heart health, blood pressure and muscle contraction. It’s Time to Stop Fearing Foods 2015-12-03T05:00:00Z What would be the drawback of cardiac contractions being the same duration as skeletal muscle contractions? Anatomy and Physiology 2013-06-19T00:00:00Z It also works with B vitamins to help with nerve signaling, normal heartbeat, and muscle contractions. The 50 (New) Healthiest Foods of All Time—With Recipes 2015-11-23T05:00:00Z Muscle contraction occurs when sarcomeres shorten, as thick and thin filaments slide past each other, which is called the sliding filament model of muscle contraction. Biology for AP Courses 2022-06-09T00:00:00Z A long noncoding RNA encodes a small peptide that activates a calcium pump regulating muscle contraction. A peptide encoded by a transcript annotated as long noncoding RNA enhances SERCA activity in muscle | Science 2016-01-14T05:00:00Z She acknowledges that it’s hard for him to stay in one position, that muscle contractions sometimes twist his spine and clench his fingers in a useless ball. The Strange Case of Anna Stubblefield 2015-10-20T04:00:00Z It is a second messenger in many signaling pathways, and is essential for muscle contraction, nerve impulse transmission, and blood clotting. Anatomy and Physiology 2013-06-19T00:00:00Z Tetanus is an infection caused by a bacteria that produces a poison that causes painful muscle contractions if it’s allowed to invade the body. The Latest: Open disaster centers to help with rent, repairs 2015-10-10T04:00:00Z These drugs block the substance acetylcholine, which is involved in learning, memory and muscle contractions. For allergy symptoms, steroid sprays may be your best option 2015-09-28T04:00:00Z The tests looked at blood levels of several heart-related hormones, some proteins associated with inflammation, and a chemical called high sensitive troponin that regulates heart muscle contractions. Cancer May Be a Hidden Danger to the Heart: Report 2015-09-28T04:00:00Z Much like an orchestra maestro synchronizes complex sounds into symphony, electrical signals in the heart synchronize muscle contractions resulting in heart beats. When Heart Palpitations Become a Problem 2015-06-25T04:00:00Z The muscle contractions of shivering release heat while using up ATP. Anatomy and Physiology 2013-06-19T00:00:00Z The researchers found that the muscle contractions exerted by each pulse of the jellyfish with a missing limb forced its other arms to space out equally. Jellyfish "Gooeyness" Could Be a Model for Self-Healing Robots 2015-06-24T04:00:00Z Isometric exercise, the article explained, involved creating an immobile muscle contraction using the resistance from an unmoving object. How to Get in Shape 'Without Moving a Muscle' 2015-02-11T05:00:00Z For the hadrosaur, superior leverage and slower muscle contractions would mean that it tired less over great distances. Duck-Billed Dinos Gave T. rex a Run for Its Money 2015-01-24T05:00:00Z By measuring the amount of muscle contraction and the duration of paralysis, Clark and colleagues were able to make inferences about the connections in the brain. How to Grow Stronger Without Lifting Weights 2014-12-23T05:00:00Z As long as ATP is available, it readily attaches to myosin, the cross-bridge cycle can recur, and muscle contraction can continue. Anatomy and Physiology 2013-06-19T00:00:00Z When the researchers added muscle relaxants to the seawater, the muscle contractions of the jellyfish slowed down, as expected. Jellyfish "Gooeyness" Could Be a Model for Self-Healing Robots 2015-06-24T04:00:00Z The eel then delivers a full blast of a longer, high-voltage shock to immobilize the prey through involuntary muscle contraction - much like a Taser - enabling easy capture. Shocking news: Electric eels exert remote control over prey 2014-12-04T05:00:00Z In contrast, the hadrosaur's similarly sized caudofemoralis muscle was attached much farther down on the femur, making the muscle contraction considerably longer, which in turn made its strides shorter and slower. Duck-Billed Dinos Gave T. rex a Run for Its Money 2015-01-24T05:00:00Z At the same time, he recorded the pulses emitted by the eel and the muscle contractions of the fish. Electric eels zap other fish via 'remote control' 2014-12-04T05:00:00Z Note that each thick filament of roughly 300 myosin molecules has multiple myosin heads, and many cross-bridges form and break continuously during muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z During intense exercise, the acidity of your blood increases and eventually interferes with muscle contractions; baking soda neutralizes this rising acidity. When Doping Isn’t Cheating 2014-11-29T05:00:00Z But instead, their analysis shows it was a gene that codes for myosin, a protein essential for muscle contraction. One hundred and one monarch genomes reveal surprising history of this long-distant migrant 2014-10-01T04:00:00Z Consider the case of Ian Curtis, who was diagnosed at 9 years old with dystonia, a disorder characterized by involuntary muscle contractions. Guest: Swedish Cherry Hill must grow for health of community 2014-08-03T04:00:00Z Initially, he experienced myoclonic seizures, which are brief muscle contractions that made his muscles stiffen, his arms lift up and his head jerk back. Food science: Fat chance : Nature : Nature Publishing Group 2014-07-08T04:00:00Z As more motor units are recruited, the muscle contraction grows progressively stronger. Anatomy and Physiology 2013-06-19T00:00:00Z Then there’s caffeine, the most versatile ergogenic aid of all, which fights mental fatigue and may also have effects on muscle contraction and metabolism. When Doping Isn’t Cheating 2014-11-29T05:00:00Z All muscle cells have electrical potential because any muscle contraction releases a small amount of voltage. Warning, high voltage: scientists solve mysteries of electric fish 2014-06-26T04:00:00Z Eccentric muscle contractions occur when a muscle extends as it contracts. The Great Hamstring Saver 2014-06-05T04:00:00Z Although McGuire appeared to be in pain, the report concludes that he was already unconscious when he had “involuntary muscle contractions associated with the ending of respiratory function.” 26-Minute Execution Deemed "Humane" in Ohio Analysis 2014-04-29T10:30:57Z To prevent complete muscle fatigue, motor units are generally not all simultaneously active, but instead some motor units rest while others are active, which allows for longer muscle contractions. Anatomy and Physiology 2013-06-19T00:00:00Z In rigor mortis, stiffness results from a lack of ATP molecules, which prevents myosin and actin — two proteins that interact to cause muscle contraction — from being separated from one another. Vascular biology: Brain vessels squeezed to death 2014-04-04T18:23:16.270Z Shivering alone is a costly survival mechanism—it relies on muscle contraction to warm us. Shivering Activates Fat to Keep You Warm 2014-02-07T04:59:00Z Intriguingly, the study also found, exercise, which involves muscle contractions, inspired an enormous surge in irisin production and, in consequence, the conversion of white fat to brown. Well: Shivering as a Form of Exercise 2014-02-05T05:01:39Z They respond better to exercise that involves forceful muscle contractions, occurring in starts and stops and with some variety — as happens, for example, when playing tennis or training with weights. Well: Building Up Bones, With a Little Bashing 2013-08-12T04:02:10Z This tension increase is called treppe, a condition where muscle contractions become more efficient. Anatomy and Physiology 2013-06-19T00:00:00Z Exercise affects bone strength in two ways: in response to the pressure of gravitational forces like those experienced when walking, running or jumping, and in reaction to the stress exerted by muscle contraction. Well: To Ensure Bone Health, Start Early 2013-08-05T04:01:23Z One suggested explanation is a neurological condition called focal dystonia that results in involuntary muscle contractions when performing a motor task and tends to affect a muscle group that is used frequently and repeatedly. Why Do Top Athletes Suddenly Develop the Yips --a Tendency to Choke under Pressure? 2013-05-18T14:15:00.220Z This is designed to mirror the way their natural counterparts move through "lateral undulation", the synchronised muscle contractions used by snakes that allow them to appear to be gliding over the ground. Snake robot teams up with rescue dog 2013-04-29T15:31:49Z During an asthma attack, calcium flows into the cells of the airway and contributes to muscle contraction. Bitter Taste May Battle Asthma 2013-04-18T02:45:00.533Z The triggers for smooth muscle contraction include hormones, neural stimulation by the ANS, and local factors. Anatomy and Physiology 2013-06-19T00:00:00Z The trio of genes, linked to muscle contraction and metabolism, show natural selection is still at work, even among modern humans. Top Stories: Siberian Winters, Fishy Thoughts, and Infrasound Navigation 2013-02-01T21:10:00Z The principle here is that body temperature rises during exercise as a result of heat produced by muscle contraction, and the harder we exercise, the higher it goes. Dangerous exercise: the hype of dehydration and heatstroke 2013-01-14T11:03:29Z Milkweed produces a toxin that disables a key protein in the animals that eat these plants; this protein helps transport ions that are important for muscle contraction, neural function, and other cellular processes. ScienceShot: To Feast on Toxic Plant, Insects Find Common Genetic Ground 2012-09-27T19:00:00Z In the lab, they exposed human muscle cells, from the heart and elsewhere, to triclosan and discovered that the chemical interrupted cellular communication necessary for muscle contraction. Chemical in Antibacterial Soap Weakens Muscle Function 2012-08-15T23:35:31Z How would muscle contractions be affected if ATP was completely depleted in a muscle fiber? Anatomy and Physiology 2013-06-19T00:00:00Z Then, slowly, their body relaxes and flattens, triggering another round of muscle contractions. Artificial Jellyfish Swims Like the Real Thing 2012-07-22T18:00:00Z The caffeine caused the muscle contractions to lax, so much so that the eggs couldn't move. Trouble Trying to Conceive? This May Be Why 2012-06-06T16:15:00Z To test whether muscle contractions caused the spasms, both groups of researchers removed the skin and muscle from the birds, and got the same result. Archaeopteryx Fossils Appear Twisted, but Not Because of Agony 2012-03-05T23:24:35Z "The first time he used it, he got a muscle contraction and he was able to walk across the room, maybe 30 feet, with a cane and somebody helping him." College student winning fight to walk again with help of new device 2011-11-16T17:57:52Z Why do muscle cells use creatine phosphate instead of glycolysis to supply ATP for the first few seconds of muscle contraction? Anatomy and Physiology 2013-06-19T00:00:00Z More pedal strokes per minute cause more muscle contractions than fewer pedal strokes, which, in consequence, generate more nervous-system messages to the brain. Well Blog: Forced Exercise's Effects on the Brain 2011-10-12T04:01:04Z Based on animal research, nicotine may trigger excessive bladder muscle contractions. Female smokers have more bladder symptoms 2011-09-09T20:09:37Z Current voice-recognition software needs to pick up audible sounds, but an electronic patch could pick up muscle contractions that happen without saying anything out loud. Electronic 'tattoo' may monitor vital organ functions 2011-09-01T04:28:07Z It appears that there is input from your brain in how much muscle contraction to put into a task, and that it’s more than just your muscles that determine when your muscles are fatigued. Muscle fatigue may be all in your head 2011-08-30T17:45:06.387Z In the body, the energy released from these high energy bonds helps fuel the body’s activities, from muscle contraction to the transport of substances in and out of cells to anabolic chemical reactions. Anatomy and Physiology 2013-06-19T00:00:00Z "The electrical interface works in the other direction as well, so you can stimulate muscle contractions." "Skin-Like" Electronic Patch Takes Pulse, Promises New Human-Machine Integration 2011-08-11T20:15:00.377Z In experiments on cells grown in a Petri dish, the gene seemed to control the accumulation of proteins necessary for muscle contraction. Missing Gene Helps Mice Run for Hours 2011-07-18T17:00:00Z On Wednesday I challenged readers to figure out the case of a middle-aged gardener with a fading rash, numbness and tingling and intermittent muscle contractions. Well: Think Like a Doctor: The Gardener's Illness Solved 2011-07-14T14:15:37Z The heart pumps blood using propagating waves of muscle contractions generated by electrical impulses travelling from the atria to the ventricles. Kinder, Gentler Defibrillator Uses Multiple, Small Jolts 2011-07-14T00:15:04.170Z One of the organ systems in the body that uses huge amounts of ATP is the muscular system because ATP is required to sustain muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z You might think that temporary tattoos look cool, but what if they could also collect and transmit information about your heart rate, temperature, muscle contractions or brain waves? "Skin-Like" Electronic Patch Takes Pulse, Promises New Human-Machine Integration 2011-08-11T20:15:00.377Z 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 After several hours the muscle contractions became less frequent, and the patient was sent home with instruction to follow up with his regular doctor and to return if symptoms worsened. Well: Think Like a Doctor: The Gardener's Illness Solved 2011-07-14T14:15:37Z The toxin blocks the ability of acetylcholine, one of the body’s chemical neurotransmitters, to control muscle contraction. Remarkable Creatures: Good to Be King in Snake-Eat-Snake World 2010-10-25T19:53:00Z Actin fibers, twisted chains of actin filaments, constitute a large component of muscle tissue and, along with the protein myosin, are responsible for muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z Any exercise you do requires two things: muscle contraction and energy. Aerobic exercise improves ability to burn fat 2010-09-16T21:31:00Z At the time, Botox had only been approved for treating various muscle contractions, crossed eyes, and excessive sweating. Allergan to pay $600 million to settle Botox probe 2010-09-01T16:40:00Z The muscle contractions disappeared by the next day, but he felt tired for a good two weeks afterwards. Well: Think Like a Doctor: The Gardener's Illness Solved 2011-07-14T14:15:37Z And with more muscle contractions, his body uses more oxygen than it would if he were watching TV. Having sex won?t hamper on-field performance 2010-06-08T22:30:00Z You didn’t decide to do that, and you may not have wanted to give your friend a reason to laugh at your expense, but it is a reflex involving skeletal muscle contractions. Anatomy and Physiology 2013-06-19T00:00:00Z They depend on the environment for the heat necessary to run their bodies -- functions ranging from muscle contraction to digestion and hearing. Lizard extinctions blamed on global warming 2010-05-13T18:46:00Z In 2003, she was studying muscle contractions in flat worms as a possible model for humans. NASA official battles the bugs of space travel 2010-04-20T04:00:00Z Also reported diffuse muscle contractions about q 15 minutes lasting 10-15 seconds with associated “dizziness” and nausea. Well: Think Like a Doctor: The Gardener's Illness Solved 2011-07-14T14:15:37Z After the first month, there can gradually be more and more motion and muscle contractions and very gradually shifting from light training to harder training in the second month. Beckham likely to miss World Cup 2010-03-15T12:18:00Z Thus, for example, you will not feel a greater sensation of pain, or have a stronger muscle contraction, because of the size of the action potential because they are not different sizes. Anatomy and Physiology 2013-06-19T00:00:00Z Myosin is responsible for converting chemical energy into mechanical force, enabling heart muscle contraction. 2010-02-11T17:20:00Z There are good studies showing that Achilles tendinosis heals faster if patients do eccentric muscle contractions, like calf raises. 2010-01-08T16:10:00Z She treated the muscle contractions with Ativan, an anxiety-reducing drug that helps the body to relax. Well: Think Like a Doctor: The Gardener's Illness Solved 2011-07-14T14:15:37Z Every muscle contraction which was needed to move the brick from the pile in the yard to the final position in the wall was measured with reference to space-and time-relations and the necessary effort. Psychology and Industrial Efficiency Somatic responses are solely based on skeletal muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z Every muscle contraction uses up a little energy. Maintaining Health Formerly Health and Efficiency Figure 23.5 Peristalsis Peristalsis moves food through the digestive tract with alternating waves of muscle contraction and relaxation. Anatomy and Physiology 2013-06-19T00:00:00Z When food enters the pharynx, involuntary muscle contractions close off the air passageways. Anatomy and Physiology 2013-06-19T00:00:00Z Additionally, the release of gastrin activates vigorous smooth muscle contractions. Anatomy and Physiology 2013-06-19T00:00:00Z This property is critical to the function of ions in transmitting nerve impulses and prompting muscle contraction. Anatomy and Physiology 2013-06-19T00:00:00Z This is because deep veins in the lower limbs rely on skeletal muscle contractions to push on the veins and thus “pump” blood back to the heart. Anatomy and Physiology 2013-06-19T00:00:00Z Additionally, sweating keeps the excess heat that comes from muscle contraction from causing the body to overheat. Anatomy and Physiology 2013-06-19T00:00:00Z Fetal breathing movements involve muscle contractions that cause the inhalation of amniotic fluid and exhalation of the same fluid, with pulmonary surfactant and mucus. Anatomy and Physiology 2013-06-19T00:00:00Z During forced breathing, inspiration and expiration both occur due to muscle contractions. Anatomy and Physiology 2013-06-19T00:00:00Z Calcium ions, Ca2+, are necessary for muscle contraction, enzyme activity, and blood coagulation. Anatomy and Physiology 2013-06-19T00:00:00Z Implantation in a uterine tube causes bleeding, which appears to stimulate smooth muscle contractions and expulsion of the embryo. Anatomy and Physiology 2013-06-19T00:00:00Z |
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