In the context of hormonal regulation of tubular reabsorption and secretion, what happens when there is a decline in the levels of antidiuretic hormone?
A) blood vessels become wider
B) blood pressure increases
C) water permeability of the principal cells decreases
D) blood volume increases
E) plasma osmolarity in blood decreases

Question

Quizplus · Accepted Answer

Antidiuretic hormone (ADH) enhances water reabsorption by increasing the water permeability of the principal cells in the collecting ducts. A decline in ADH levels would result in a decrease in the water permeability of the principal cells and therefore a decrease in water reabsorption. This could lead to increased urine output and potentially dehydration.

In the Context of Hormonal Regulation of Tubular Reabsorption and Secretion