The descending limb of loop of Henle is impermeable to water.
The ascending limb of loop of Henle is impermeable to water.
The ascending limb of loop of Henle is permeable to water.
The descending limb of loop is Henle is permeable to electrolytes.
A
The descending limb of loop is Henle is permeable to electrolytes.
B
The ascending limb of loop of Henle is impermeable to water.
C
The descending limb of loop of Henle is impermeable to water.
D
The ascending limb of loop of Henle is permeable to water.
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Solution
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The Henle's loop helps to maintain the concentration of urine. The descending loop of Henle is permeable to water but it is impermeable to electrolytes. The ascending loop is impermeable to water but allows transport of electrolytes.
So, the correct answer is option B.
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Similar Questions
Q1
Select the statements which are correct with respect to loop of Henle in a nephron.
1) Ascending limb of loop of Henle is impermeable to electrolytes, but is permeable to water.
2) Descending limb of loop of Henle is permeable to water but is impermeable to electrolytes
3) Both ascending and descending limbs are permeable to water.
4) Reabsorption is minimum in the ascending limb of loop of Henle.
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Q2
Assertion :In the descending limb of loop of Henle, the urine is hypertonic, while is ascending limb of loop of Henle, the urine is hypotonic Reason: Descending limb is impermeable to Na+,while ascending limb is impermeable to H2O.
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Q3
Assertion :In the descending limb of the loop of Henle, the uring is hypertonic, while in ascending limb of the loop of Henle, the urine is hypotonic. Reason: Descending limb is impermeable to Na, while ascending limb is impermeable to H2O
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Q4
Assertion :The renal fluid becomes increasing concentrated when it flows down in the descending limb of loop of Henle towards inner medulla, but its concentration decreases in the ascending limb when it flows towards the cortex. Reason: The descending limb of the loop of Henle water is reabsorbed, the ascending limb is impermeable to water but salt are absorbed.
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Q5
Assertion :While going down the loop of Henle, the filtrate becomes hypotonic. Reason: The descending limb of loop of Henle is impermeable to both water and electrolytes.