ADH (Antidiuretic Hormone) is Also Called Vasopressin Because at High

Question

ADH (antidiuretic hormone) is also called vasopressin because at high concentrations it causes
A) increased urine output.
B) constriction of blood vessels.
C) increased potassium secretion by the kidneys.
D) decreased sodium retention by the kidneys.
E) dilation of blood vessels.

Accepted Answer

ADH, also known as vasopressin, causes constriction of blood vessels at high concentrations, which increases blood pressure. It actually decreases urine output by promoting water reabsorption in the kidneys, which is why it is called an antidiuretic hormone. ADH does not affect potassium secretion or sodium retention, and it does not cause dilation of blood vessels.