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Which hormone increases water permeability in the renal c... | QuestionStock

Representative image for question: Which hormone increases water permeability in the renal collecting duct by promoting insertion of aquaporin-2 channels into the apical membrane?

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Medicine

Which hormone increases water permeability in the renal collecting duct by promoting insertion of aquaporin-2 channels into the apical membrane?

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Which hormone increases water permeability in the renal collecting duct by promoting insertion of aquaporin-2 channels into the apical membrane?

Options:

Antidiuretic hormone (vasopressin)
Aldosterone
Atrial natriuretic peptide
Parathyroid hormone

Correct answer: Antidiuretic hormone (vasopressin)

Explanation: Antidiuretic hormone (vasopressin), released from the posterior pituitary, binds V2 receptors in collecting duct cells to insert aquaporin‑2 channels and concentrate urine.

Created 2026-03-10T17:16:55.249Z. Updated 2026-03-10T17:16:55.249Z.