Question

How many of the following statements are not correct ?
(1) DCT is site where maximum reabsorption takes place due to presence of microvilli.
(ii) PCT lies in renal medulla.
(ii) ADH increases permeability of PCT and thus decreases urine volume (amount).
(iv) Kidney helps in maintaining homeostasis in the body.
(v) Loop of Henle is the U shaped segment of nephron located in renal medulla.​

Answer 1

Answer:

A) The statement I is wrong as the ascending limb of Henle's loops is impervious to water. Statement IV is correct as Conditional reabsorption of Na

+

occurs in DCT. Statement V is correct as PCT reabsorbs ions and helps in maintaining ionic balance of body fluids.

B) Statement II is correct as tubular cells in the DCT secrete substance like H

+

, K

+

and ammonia into filtrate. Statement V is correct. Statement III is wrong as maximum reabsorption takes place in Bowman's capsule.

C) Statements IV and V are correct while statement III is wrong.

D) Statements II, IV and V are correct.

E) Statements I and III are wrong while II is correct.

So the correct answer is 'II, IV and V alone are correct'.