Which choice describes the countercurrent mechanism of the nephron loop?
A) Water moves out of the ascending limb; sodium moves in the ascending limb
B) Water moves in the ascending limb; sodium moves out of the ascending limb
C) Water moves out of the descending limb; sodium moves out of the ascending limb
D) Water moves in the descending limb; sodium moves out of the descending limb

Question

Quizplus · Accepted Answer

The countercurrent mechanism involves water moving out of the descending limb and sodium moving out of the ascending limb, creating a concentration gradient that facilitates reabsorption.

Which Choice Describes the Countercurrent Mechanism of the Nephron Loop