1(viii)
Assertion (A): The loop of Henle helps concentrate or dilute urine.
Reason (R): The loop of Henle regulates the amount of water, reabsorbed into the bloodstream.
- (a)(A) is true and (R) is false.
- (b)(A) is false and (R) is true.
- (c)Both (A) and (R) are true and (R) is the correct explanation of (A).
- (d)Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Show SolutionHide Solution↓
Both (A) and (R) are true and (R) is the correct explanation of (A).
Reason — Water and sodium ions are reabsorbed along the loop of Henle. By varying the quantity of water returned to the blood, the loop of Henle decides whether the urine leaving the nephron is concentrated or dilute.