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The U-shaped segment of the nephron is the?
The loop of Henle is the U-shaped segment of the nephron located in the kidney. It plays a key role in reabsorbing water and salts from the filtrate to maintain fluid balance in the body. The loop of Henle is composed of a descending and an ascending limb.
What is the horse shaped segment of the nephron?
loop of Henle
What are the components of the renal tubule as they are encountered by filtrate?
proximal continuous tubule loop of henle distal continuous tubule
What is the function of the ascending limb of the loop of henle?
The function of the ascending loop of henle is draw Sodium out of the filtrate. The ability of the ascending loop to actively transport sodium into the surrounding tissue is directly related to the amount of water that can be diffused out of the descending loop of henle. (main factor in water re-absorption)
What is the path filtrate as it passes through the nephron?
This is the pathway of filtration, which takes place in the nephron:1-Glomerulus and Bowman's capsule: Filtration of water and dissolved solutes occurs as the blood is forced through the walls of glamerulus into the Bowman's capsule by fluid pressure in the capillaries ( capillary beds).2-Proximal tubule: Selective reabsorption of nutrients from filtrate back into blood by active and passive transport.3-Descending limb of loop of henle: This is permeable to water resulting in loss of water from filtrate by osmosis. Salt becomes concentrated in the filtrate as descending limb penetrates inner medulla of kidney.4-Ascending limb of loop of henle: Thin segment of ascending limb of loop of henle in permeable to salt resulting in diffusion of salt out of ascending limb.5-Distal tubule: Selective reabsorption of nutrients from blood into nephron by active transport.6-Collecting Duct: Urine formation.
What type of osmotic pressure does the loop of henle create?
The loop of Henle creates an osmotic pressure gradient in the kidney medulla by allowing the reabsorption of water from the filtrate. This gradient is essential for the kidney to concentrate urine and maintain water balance in the body.
Do nephrons form urine?
Blood is filtered through the bowmans capsule (large proteins are left in the bloodstream). The fluid that remains in the nephron after filtration is called the filtrate.The filtrate enters the proximal tubule. Glucose, amino acids, and water are secreted (released into bloodstream). The filtrate begins to darken with less water in it.The filtrate then moves on to the Loop of Henle. On descent, water leaves the filtrate by osmosis and on ascent; sodium and chloride leave the filtrate by active transport. This is necessary to produce concentrated urine. The loop of henle becomes less permeable as it goes ascends so less sodium and chloride leave the filtrate as the filtrate makes its way up the loop.The filtrate then moves on to the Distal Tubule where pH is regulated and sodium potassium, and calcium levels are controlled. The filtrate becomes more concentrated here.The filtrate then moves into the Collecting Duct. The collecting duct is what connects the nephrons to the ureter. It participates in electrolyte and fluid balance through reabsorption and excretion.(I did this for a Grade 12 Biology lab so this is just a collection of stuff I got off the internet from various good sources! anybody else who was just as confused as I was when I got this question!)
The Segment of the nephron that is not permeable to water even in the presence of vasopressin is called what?
The segment of the nephron that is not permeable to water even in the presence of vasopressin is the ascending limb of the loop of Henle. This segment actively reabsorbs sodium and chloride ions, but water remains impermeable, allowing for the concentration of urine.
How much filtrate is reabsorbed in each part of the nephron?
In the proximal tubule, about 65-70% of the filtrate is reabsorbed, mainly through the process of passive and active transport. In the loop of Henle, about 20% is further reabsorbed, while in the distal tubule and collecting duct, the final 10% of filtrate is reabsorbed, with the amount varying depending on the body's needs for water and electrolyte balance.
What happens to filtered blood after it leaves the nephron?
Glomerular filterate goes into the bowmans capsule then gets transported along the first convuluted tubule, then descending part of thr loop of henle, then the ascending part of the loop of henle, then the second convuluted tubule, then into the collecting duct and onwards to the ureters, then into the bladder and out through the urethra and into the specimen pot for your illegal drug tests.nephron loop
An example of a countercurrent is what?
In the human body, the countercurrent exchange system in the nephrons of the kidney allows for efficient reabsorption of water and ions. Blood flow and filtrate flow travel in opposite directions, enhancing the exchange of solutes between the blood and the filtrate for optimal water conservation.
How does the loop of Henle enable the mammalian kidney to produce hypertonic urine?
The loop of Henle plays a crucial role in the kidney's ability to produce hypertonic urine by creating a countercurrent multiplication system. As filtrate descends into the loop, water is reabsorbed in the descending limb, concentrating the filtrate. In the ascending limb, sodium and chloride ions are actively transported out, making the surrounding medulla hyperosmotic. This gradient allows for further water reabsorption in the collecting ducts, enabling the production of urine that is more concentrated than blood plasma.
