The hormone-induced increases in water permeability of the distal tubule and collecting ducts is mediated by a(n) ________.

A) increase in aquaporin-2 activity
B) increase in aquaporin-3 activity
C) increase in paracellular permeability
D) decrease in "tightness" of tight junctions
E) decrease in paracellular permeability


Ans: A) increase in aquaporin-2 activity

Anatomy & Physiology

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In which of the following parts of the nephron does aldosterone control the reabsorption of sodium ions?

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