Vasopressin decreases the volume of urine primarily by causing:
Correct Answer: Increase in water permeability of collecting duct cells
Description: In the absence of ADH, collecting ducts are impermeable to water. ADH increases the exocytosis and decreases the endocytosis of water channels (aquaporins) in the collecting duct cells. This results in increase in permeability of collecting ducts to water.
Category:
Pharmacology
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