In a dehydrated patient, what happens to urine production because of vasopressin's influence on aquaporins?

💡 Explanation

Vasopressin triggers increased aquaporin expression in the collecting duct, which causes increased water reabsorption by osmosis into the hypertonic medullary interstitium; therefore, urine volume decreases, and osmolarity increases, rather than the opposite effects due to lack of water reabsorption.

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