Antidiuretic hormone (ADH) action on the kidneys leads to:

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Multiple Choice

Antidiuretic hormone (ADH) action on the kidneys leads to:

Explanation:
ADH increases water reabsorption in the late distal tubule and collecting ducts by promoting insertion of aquaporin-2 channels into the apical membrane. This makes the filtrate draw water back into the bloodstream, concentrating the urine and reducing its volume. It does not raise urine volume or decrease water reabsorption; thirst is a separate regulatory mechanism and not the direct renal action of ADH.

ADH increases water reabsorption in the late distal tubule and collecting ducts by promoting insertion of aquaporin-2 channels into the apical membrane. This makes the filtrate draw water back into the bloodstream, concentrating the urine and reducing its volume. It does not raise urine volume or decrease water reabsorption; thirst is a separate regulatory mechanism and not the direct renal action of ADH.

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