| 单词 | nephron |
| 例句 | The nephrons remove wastes, concentrate them, and form urine that is collected in the bladder. Concepts of Biology 2013-04-25T00:00:00Z The renal cortex is granular due to the presence of nephrons—the functional unit of the kidney. Biology for AP Courses 2022-06-09T00:00:00Z The papillae are bundles of collecting ducts that transport urine made by nephrons to the calyces of the kidney for excretion. Anatomy and Physiology 2013-06-19T00:00:00Z DNA methylation could be influencing heart disease through the kidneys—which help to control blood pressure—by altering the development of the fetal kidney and its filtering units, called nephrons. How a Child’s Heart Health Could Be Decided before Birth 2021-11-30T05:00:00Z Each bean-shaped organ has about a million units called nephrons. Are Too Many Older Adults Told They Have Kidney Disease? 2021-11-01T04:00:00Z The renal cortex contains the nephrons—the functional unit of the kidney. Concepts of Biology 2013-04-25T00:00:00Z The cortical radiate arteries branch into numerous afferent arterioles, and then enter the capillaries supplying the nephrons. Biology for AP Courses 2022-06-09T00:00:00Z The afferent arterioles service about 1.3 million nephrons in each kidney. Anatomy and Physiology 2013-06-19T00:00:00Z After around 34 weeks the number of nephrons is fixed. How a Child’s Heart Health Could Be Decided before Birth 2021-11-30T05:00:00Z And each nephron contains a glomerulus, a tuft of tiny vessels that filters the blood as it passes through, and a tubule that sends cleansed blood and essential nutrients back into circulation. Are Too Many Older Adults Told They Have Kidney Disease? 2021-11-01T04:00:00Z It is distributed in smaller vessels until it reaches each nephron in capillaries. Concepts of Biology 2013-04-25T00:00:00Z As mentioned previously, the functional unit of the kidney is the nephron, illustrated in Figure 32.7. Biology for AP Courses 2022-06-09T00:00:00Z The rest of the nephron consists of a continuous sophisticated tubule whose proximal end surrounds the glomerulus in an intimate embrace—this is Bowman’s capsule. Anatomy and Physiology 2013-06-19T00:00:00Z Each kidney features a latticework of roughly one million tiny filtering units, called nephrons. How artificial kidneys and miniaturized dialysis could save millions of lives 2020-03-10T04:00:00Z De novo lumen formation and elongation in the developing nephron: a central role for afadin in apical polarity. Pluripotent state transitions coordinate morphogenesis in mouse and human embryos 2017-11-28T05:00:00Z Within the nephron the blood comes in intimate contact with the waste-collecting tubules in a structure called the glomerulus. Concepts of Biology 2013-04-25T00:00:00Z Each kidney is made up of over one million nephrons that dot the renal cortex, giving it a granular appearance when sectioned sagittally. Biology for AP Courses 2022-06-09T00:00:00Z These will next form a capillary network around the more distal portions of the nephron tubule, the peritubular capillaries and vasa recta, before returning to the venous system. Anatomy and Physiology 2013-06-19T00:00:00Z Blood entering a nephron passes through a cluster of tiny vessels called the glomerulus. How artificial kidneys and miniaturized dialysis could save millions of lives 2020-03-10T04:00:00Z When a known renal toxin was introduced, it killed cells in the lab-grown nephrons—exactly what the toxin would do in normal kidneys. Researchers Grow Kidney-Like Organs in Laboratory 2015-10-07T04:00:00Z Tubular structures called nephrons filter fluid from the blood and produce urine. The boom in mini stomachs, brains, breasts, kidneys and more 2015-07-28T04:00:00Z A nephron consists of three parts—a renal corpuscle, a renal tubule, and the associated capillary network, which originates from the cortical radiate arteries. Biology for AP Courses 2022-06-09T00:00:00Z As the glomerular filtrate progresses through the nephron, these capillary networks recover most of the solutes and water, and return them to the circulation. Anatomy and Physiology 2013-06-19T00:00:00Z “Creating just a single nephron would be a great achievement. But there are a million in each kidney.” How 3-D Printing Is Changing Medicine 2014-11-17T05:00:00Z For example, the nephrons weren’t connected to a proper draining system. Researchers Grow Kidney-Like Organs in Laboratory 2015-10-07T04:00:00Z Clinical research involves indirect clinical application to patient care like, for example, studying the nephron, the working basic part of the kidney. Pursue Natural Curiosity to Find the Right Premed Research Opportunity 2014-08-12T04:00:00Z The DCT, which is the last part of the nephron, connects and empties its contents into collecting ducts that line the medullary pyramids. Biology for AP Courses 2022-06-09T00:00:00Z Some nephrons have a short loop of Henle that does not dip beyond the cortex. Anatomy and Physiology 2013-06-19T00:00:00Z Fewer nephrons means more wear and tear to existing nephrons, more nephron loss and an increase in blood pressure with age. Developmental biology: Support mothers to secure future public health 2013-12-11T18:50:36.343Z Tubules from neighboring nephrons join together into bigger and bigger tubes until they exit the kidney as the ureter, the duct that takes urine to the bladder. Paradoxical Polyuria--when it comes to kidneys, sometimes more is less 2011-02-10T17:15:05.450Z Cortical nephrons are found in the renal cortex, while juxtamedullary nephrons are found in the renal cortex close to the renal medulla. Biology for AP Courses 2022-06-09T00:00:00Z The collecting ducts amass contents from multiple nephrons and fuse together as they enter the papillae of the renal medulla. Biology for AP Courses 2022-06-09T00:00:00Z About 15 percent of nephrons have long loops of Henle that extend deep into the medulla and are called juxtamedullary nephrons. Anatomy and Physiology 2013-06-19T00:00:00Z The nephron filters and exchanges water and solutes with two sets of blood vessels and the tissue fluid in the kidneys. Biology for AP Courses 2022-06-09T00:00:00Z Juxtamedullary nephrons have a larger glomerulus, allowing them to filter blood at a greater rate than cortical nephrons. Biology for AP Courses 2022-06-09T00:00:00Z Juxtamedullary nephrons have a smaller glomerulus, allowing them to filter blood at a greater rate than cortical nephrons. Biology for AP Courses 2022-06-09T00:00:00Z First, the nephrons filter blood that runs through the capillary network in the glomerulus. Biology for AP Courses 2022-06-09T00:00:00Z Even then, serial sections and computer reconstruction are necessary to give us a comprehensive view of the functional anatomy of the nephron and its associated blood vessels. Anatomy and Physiology 2013-06-19T00:00:00Z These again split to form arcuate arteries, from which cortical radiate arteries radiate out and branch into many afferent arterioles that enter the capillaries supplying the nephrons. Biology for AP Courses 2022-06-09T00:00:00Z These again split to form arcuate arteries, from which cortical radiate arteries radiate out and branch into many afferent arterioles that enter the capillaries supplying the nephrons. Biology for AP Courses 2022-06-09T00:00:00Z These again split to form cortical radiate arteries that radiate out and branch into many afferent arterioles that enter the capillaries supplying the nephrons. Biology for AP Courses 2022-06-09T00:00:00Z The collecting ducts collect filtrate coming from the nephrons and fuse in the medullary papillae. Biology for AP Courses 2022-06-09T00:00:00Z Many changes take place in the different parts of the nephron before urine is created for disposal. Anatomy and Physiology 2013-06-19T00:00:00Z These again split to form arcuate arteries, from which cortical radiate arteries radiate out and branch into many afferent arterioles that enter the capillaries supplying the nephrons. Biology for AP Courses 2022-06-09T00:00:00Z The cell’s nephrons would no longer be able to reabsorb water. Biology for AP Courses 2022-06-09T00:00:00Z The nephron consists of three parts: the glomerulus, the renal tubule, and the associated capillary network originating from the cortical radiate arteries. Biology for AP Courses 2022-06-09T00:00:00Z Figure 32.8 Each part of the nephron performs a different function in filtering waste and maintaining homeostatic balance. Biology for AP Courses 2022-06-09T00:00:00Z The principle task of the nephron population is to balance the plasma to homeostatic set points and excrete potential toxins in the urine. Anatomy and Physiology 2013-06-19T00:00:00Z The nephron consists of three parts: the renal corpuscle, the Bowman’s capsule, and the associated capillary network originating from the cortical radiate arteries. Biology for AP Courses 2022-06-09T00:00:00Z The nephron consists of three parts: the renal corpuscle, the renal tubule, and the associated capillary network originating from the segmental renal artery. Biology for AP Courses 2022-06-09T00:00:00Z The nephron consists of three parts: the renal corpuscle, the renal tubule, and the associated capillary network originating from the cortical radiate arteries. Biology for AP Courses 2022-06-09T00:00:00Z First, the nephrons filter blood that runs through the capillary network in the glomerulus, which filters out almost all solutes, except for proteins, by glomerular filtration. Biology for AP Courses 2022-06-09T00:00:00Z In fact, each duct collects filtrate from several nephrons for final modification. Anatomy and Physiology 2013-06-19T00:00:00Z Different regions of the nephrons have specialized cells that respond to chemical messengers and hormones like epinephrine, renin, aldosterone, ADH, and ANP. Biology for AP Courses 2022-06-09T00:00:00Z Different regions of the nephrons have specialized cells that respond to chemical messengers and hormones like epinephrine, renin, aldosterone, ADH, and ANP. Biology for AP Courses 2022-06-09T00:00:00Z It constricts the afferent arterioles, causing the flow of blood into the nephrons to stop. Biology for AP Courses 2022-06-09T00:00:00Z First, the nephrons filter blood that runs through the capillary network in the glomerulus, which filters out almost all solutes, except for proteins, by glomerular filtration. Biology for AP Courses 2022-06-09T00:00:00Z You will discover that different parts of the nephron utilize specific processes to produce urine: filtration, reabsorption, and secretion. Anatomy and Physiology 2013-06-19T00:00:00Z They constrict the afferent arterioles, causing the flow of blood into the nephrons to stop. Biology for AP Courses 2022-06-09T00:00:00Z It constricts the efferent arterioles, causing the flow of blood into the nephrons to stop. Biology for AP Courses 2022-06-09T00:00:00Z They constrict the efferent arterioles, causing the flow of blood into the nephrons to stop. Biology for AP Courses 2022-06-09T00:00:00Z First, the nephrons filter blood that runs through the capillary network in the glomerulus, which filters out almost all solutes, except for uric acid, by glomerular filtration. Biology for AP Courses 2022-06-09T00:00:00Z You will learn how each of these processes works and where they occur along the nephron and collecting ducts. Anatomy and Physiology 2013-06-19T00:00:00Z The figure shows the components of a nephron located within the kidneys. Biology for AP Courses 2022-06-09T00:00:00Z The figure below shows the components of a nephron located within the kidneys. Biology for AP Courses 2022-06-09T00:00:00Z Alcohol impairs the pituitary gland, which controls how much water is reabsorbed by the nephrons. Biology for AP Courses 2022-06-09T00:00:00Z First, the nephrons filter blood that runs through the capillary network in the glomerulus, which filters out almost all solutes, except for proteins, by glomerular filtration. Biology for AP Courses 2022-06-09T00:00:00Z Most of the ions and molecules in the filtrate are needed by the body and must be reabsorbed farther down the nephron tubules, resulting in the formation of urine. Anatomy and Physiology 2013-06-19T00:00:00Z How would impairment of this hormone likely affect the various components of the nephron pictured below? Biology for AP Courses 2022-06-09T00:00:00Z Cells in the juxtaglomerular apparatus, which regulates the functions of the nephrons of the kidney, detect this and release renin. Biology for AP Courses 2022-06-09T00:00:00Z The caffeine in coffee and tea works by promoting vasodilation in the nephron, which increases GFR. Anatomy and Physiology 2013-06-19T00:00:00Z Different regions of the nephron have specialized cells with receptors to respond to chemical messengers and hormones. Biology for AP Courses 2022-06-09T00:00:00Z Each collecting duct collects forming urine from several nephrons and responds to the posterior pituitary hormone ADH by inserting aquaporin water channels into the cell membrane to fine tune water recovery. Anatomy and Physiology 2013-06-19T00:00:00Z When aldosterone causes a recovery of Na+ in the nephron, a negative electrical gradient is created that promotes the secretion of K+ and Cl– into the lumen. Anatomy and Physiology 2013-06-19T00:00:00Z Aldosterone increases the reabsorption of sodium in the distal tubules of the nephrons in the kidneys, and water follows this reabsorbed sodium back into the blood. Anatomy and Physiology 2013-06-19T00:00:00Z The glomerulus is the first part of the nephron, which then continues as a highly specialized tubular structure responsible for creating the final urine composition. Anatomy and Physiology 2013-06-19T00:00:00Z Once the afferent arterioles are constricted, blood flow into the nephrons stops. Biology for AP Courses 2022-06-09T00:00:00Z Hydrostatic pressure is especially important in governing the movement of water in the nephrons of the kidneys to ensure proper filtering of the blood to form urine. Anatomy and Physiology 2013-06-19T00:00:00Z All of these substances were “absorbed” in the digestive tract—99 percent of the water and most of the solutes filtered by the nephron must be reabsorbed. Anatomy and Physiology 2013-06-19T00:00:00Z More substances move across the membranes of the PCT than any other portion of the nephron. Anatomy and Physiology 2013-06-19T00:00:00Z About 67 percent of the water, Na+, and K+ entering the nephron is reabsorbed in the PCT and returned to the circulation. Anatomy and Physiology 2013-06-19T00:00:00Z It acts directly on the nephrons and decreases glomerular filtration rate. Biology for AP Courses 2022-06-09T00:00:00Z With up to 180 liters per day passing through the nephrons of the kidney, it is quite obvious that most of that fluid and its contents must be reabsorbed. Anatomy and Physiology 2013-06-19T00:00:00Z The loops of cortical nephrons do not extend into the renal medulla very far, if at all. Anatomy and Physiology 2013-06-19T00:00:00Z Juxtamedullary nephrons have loops that extend variable distances, some very deep into the medulla. Anatomy and Physiology 2013-06-19T00:00:00Z This increase results in reabsorption of up to 15 percent of the water entering the nephron. Anatomy and Physiology 2013-06-19T00:00:00Z The nephron is the functional unit of the kidney, which actively filters blood and generates urine. Biology for AP Courses 2022-06-09T00:00:00Z Various portions of the nephron differ in their capacity to reabsorb water and specific solutes. Anatomy and Physiology 2013-06-19T00:00:00Z It promotes Na+ reabsorption by the nephron, promoting the retention of water. Anatomy and Physiology 2013-06-19T00:00:00Z Which vessels and what part of the nephron are involved in countercurrent multiplication? Anatomy and Physiology 2013-06-19T00:00:00Z Explain what happens to Na+ concentration in the nephron when GFR increases. Anatomy and Physiology 2013-06-19T00:00:00Z The nephron is made up of the renal corpuscle and renal tubule. Biology for AP Courses 2022-06-09T00:00:00Z Most of the Ca++, Na+, glucose, and amino acids must be reabsorbed by the nephron to maintain homeostatic plasma concentrations. Anatomy and Physiology 2013-06-19T00:00:00Z |
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