What is the descending loop of Henle?
Apr 04, 2022 · The thin descending limb has low permeability to ions and urea, while being highly permeable to water. The loop has a sharp bend in the renal medulla going from descending to ascending thin limb. The thick ascending limb is impermeable to water, but it …
Is the loop of Henle permeable to water?
Jun 24, 2020 · Why is the descending loop of Henle thinner than the ascending loop of Henle? The thin descending loop is highly permeable to water (which is easily transferred to the interstitium) and less permeable to solutes. On the other hand, the thin ascending limb is highly permeable to sodium but impermeable to water. Click to see full answer.
What is the difference between the thin descending loop and the thin ascending loop?
Jan 30, 2020 · The key difference between ascending and descending loop of Henle is that ascending loop of Henle is the thicker segment of the loop of Henle located just after the sharp bend of the loop while descending loop of Henle is the thinner segment located just before the sharp bend of the loop.
What are the three segments of the Henle?
Mar 04, 2020 · Additionally, why is the descending loop of Henle thinner than the ascending loop of Henle? The thin descending loop is highly permeable to water (which is easily transferred to the interstitium) and less permeable to solutes. On the other hand, the thin ascending limb is highly permeable to sodium but impermeable to water.
What is the difference between ascending and descending loop of Henle?
The key difference between ascending and descending loop of Henle is that ascending loop of Henle is the thicker segment of the loop of Henle located just after the sharp bend of the loop while descending loop of Henle is the thinner segment located just before the sharp bend of the loop.Jan 30, 2020
Why is thick ascending loop of Henle impermeable?
Water Balance The thick ascending limb of Henle's loop actively reabsorbs sodium chloride (NaCl) but is impermeable to water. Therefore this segment raises the osmolality of the interstitial fluid, thus generating medullary interstitial hypertonicity and a lumen-to-interstitium osmotic gradient.
Is the descending or ascending loop of Henle thicker?
The thin ascending limb is found in the medulla of the kidney, and the thick ascending limb can be divided into a part that is in the renal medulla and a part that is in the renal cortex. The ascending limb is much thicker than the descending limb.
Why is the loop of Henle so narrow?
The descending portion of the loop of Henle is extremely permeable to water and is less permeable to ions, therefore water is easily reabsorbed here and solutes are not readily reabsorbed.
What occurs in the descending limb of the loop of Henle quizlet?
The loop of henle dips down into the medulla, which is highly salty because of the ion absorption, Sodium is constantly being pumped out of the ascending limb into the medulla. The ascending limb is impermeable to water. The descending limb is permeable to water, but has low permeability to Sodium.
Where is the descending loop of Henle?
Within the nephron of the kidney, the descending limb of loop of Henle is the portion of the renal tubule constituting the first part of the loop of Henle.
Why is the descending limb thinner?
Why is the descending loop of Henle thinner than the ascending loop of Henle? The thin descending loop is highly permeable to water (which is easily transferred to the interstitium) and less permeable to solutes. On the other hand, the thin ascending limb is highly permeable to sodium but impermeable to water.Jun 24, 2020
What has thick and thin segments?
Thus, the correct answer is 'DL of loop of Henle. '
What does the thick ascending limb do?
The thick ascending limb (TAL) occupies a central anatomic and functional position in human renal physiology, with critical roles in the defense of the extracellular fluid volume, the urinary concentrating mechanism, calcium and magnesium homeostasis, bicarbonate and ammonium homeostasis, and urinary protein ...Oct 15, 2014
What does the thin segment of the nephron loop's descending limb?
The first segment of the loop, the thin descending limb, is permeable to water, and the liquid reaching the bend of the loop is much richer in salt and urea than the blood plasma is.
Why the filtrate becomes more dilute as glomerular filtrate moves through the ascending loop of Henle?
As glomerular filtrate moves through the ascending loop of Henle, the filtrate becomes for dilute. Why? The ascending loop of Henle is permeable to ions but impermeable to water.
What is permeable for ascending loop of Henle?
So, the correct answer is 'Na+.
What is the ascending loop of the henle function?
The ascending loop of Henle function is impermeable to water. In this, sodium chloride is transported from a thick portion of the ascending limb without accompanying water so an osmotic gradient of approximately 200 mosm/kg is generated. Active sodium transport is accomplished by Na+, K+ -ATPase located in the basolateral membranes of the tubular cells.
What is the function of the loop of henle?
The loop of Henle function is to reabsorb water and sodium chloride from the filtrate. This conserves water for the organism, resulting in highly concentrated urine. In other words, the Loop of Henle is a heterogeneous segment that comprises the pars recta of the proximal tubule, the thin descending and ascending limbs along ...
Why does sodium reabsorption occur in ascending limbs?
The sodium reabsorption in a thin ascending limb is quite passive and occurs paracellularly because of the difference in osmolarity between the tubule and interstitium. Share this with your friends. Share.
What is the first portion of the loop?
The first portion of the loop is the thin descending limb which is permeable to water. The descending loop of Henle is an important function. The liquid that reaches the bend of the loop is richer in salt and urea than the blood plasma. As the liquid returns through the thin ascending limb, sodium chloride diffuses out of the tubule into ...
What happens to sodium chloride in the loop henle?
There is net potassium reabsorption in the loop Henle.
Where does re-absorption take place?
Re-absorption takes place at the expense of energy. 2. Henle's Loop. Also called the loop of Henle, the Henle’s loop carries both descending limb of loop of henle and ascending limb of loop of Henle. Since the loop of henle location is at the Nephron; both the descending and ascending limbs carry a spongy feeling.
Which limb of the loop of Henle expresses sodium-potassium-chloride?
The thick descending limb of the loop of Henle expresses a sodium-potassium-chloride cotransporter and helps reabsorb approximately a third of the filtered sodium and chloride from the fluid in the tubular lumen into the blood.
What are the three segments of the loop of the henle?
Anatomically, the loop of Henle can be divided into three main segments: the thin descending limb, the thin ascending limb, and the thick ascending limb (sometimes also called the diluting segment). Each nephron of the kidney contains blood vessels and a special tubule.
What is the liquid in the loop of Henle?
The liquid entering the loop of Henle is the solution of salt, urea, and other substances passed along by the proximal convoluted tubule, from which most of the dissolved components needed by the body—particularly glucose, amino acids, and sodium bicarbonate—have been reabsorbed into the blood.
What is the loop of a nephron?
Alternative Titles: Henle’s loop, nephronic loop. Loop of Henle, long U-shaped portion of the tubule that conducts urine within each nephron of the kidney of reptiles, birds, and mammals. The principal function of the loop of Henle is in the recovery of water and sodium chloride from urine.
How does the filtrate of the nephron work?
As the filtrate flows through the tubule of the nephron, it becomes increasingly concentrated into urine. Waste products are transferred from the blood into the filtrate while nutrients are absorbed from the filtrate into the blood. Encyclopædia Britannica, Inc. Read More on This Topic.
Which segment of the loop is permeable to water?
The first segment of the loop, the thin descending limb, is permeable to water, and the liquid reaching the bend of the loop is much richer in salt and urea than the blood plasma is. As the liquid returns through the thin ascending limb, sodium chloride diffuses out of the tubule into the surrounding tissue, where its concentration is lower.
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Which segment of the loop is responsible for the removal of salt?
In the third segment of the loop, the thick ascending limb, the tubule wall can, if necessary, effect further removal of salt, even against the concentration gradient, in an active-transport process requiring the expenditure of energy.