An increase in the permeability of the cells of the collecting tubule to water is due to an) .
A)increase in the production of aldosterone
B)increase in the production of ADH
C)decrease in the concentration of the blood plasma
D)decrease in the production of ADH

Question

Quizplus · Accepted Answer

The permeability of the cells of the collecting tubule to water is regulated by antidiuretic hormone (ADH). An increase in the production of ADH, such as during dehydration, results in an increase in the permeability of the cells to water, leading to water reabsorption and less urine output. Conversely, a decrease in ADH production, such as when well hydrated, leads to less permeability and more urine output. An increase in aldosterone production would mainly affect the reabsorption of sodium ions in the distal tubules and collecting ducts, rather than the permeability to water. A decrease in the concentration of blood plasma would stimulate the release of ADH, rather than decrease its production.

An Increase in the Permeability of the Cells of the Collecting