The hormone ADH causes the reabsorption of water in the kidney by increasing the number of aquaporin water channels in the plasma membrane of the collecting ducts.

Question

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ADH (Antidiuretic Hormone) increases the permeability of the collecting ducts' walls in the kidney to water by promoting the insertion of aquaporin-2 water channels into the plasma membrane of the cells lining the ducts, thereby facilitating water reabsorption.

The Hormone ADH Causes the Reabsorption of Water in the Kidney