Which of the following statements about the reabsorption process in Henle's loop are correct?
- A, B and D only
- A and B only
- B, C and D only
- A, B and C only
Answer
(1) A, B and D only
Solution
As per NCERT:
A is correct: The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes.
B is correct: This concentrates the filtrate as it moves down the descending limb.
D is correct: The ascending limb is impermeable to water but allows transport of electrolytes actively or passively.
C is incorrect: Reabsorption in Henle's loop is minimum, and Na+ and water are not reabsorbed together — water leaves only from the descending limb and electrolytes only from the ascending limb.
∴ A, B and D only.
Answer: (1)