Question

Which of the following is NOT true of a person who is dehydrated?

A. plasma osmolality increases
B. hypothalamus stimulates release of ADH
C. ADH causes the kidneys to excrete water
D. increased osmolality causes thirst

Answer 1

ADH does not cause the kidneys to excrete water.

Step-by-step explanation:

The correct option is C. ADH causes the kidneys to excrete water. When a person is dehydrated, the hypothalamus stimulates the release of antidiuretic hormone (ADH). ADH signals the kidneys to recover water from urine, effectively diluting the blood plasma and reducing urine volume. Therefore, it does not cause the kidneys to excrete water.