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 in the descending limb; sodium moves out of the descending limb
D) Water moves out of the descending limb; sodium moves out of the ascending limb


D

Anatomy & Physiology

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