Secretion of antidiuretic hormone (ADH) is stimulated by:
A) increased serum potassium.
B) increased plasma osmolality.
C) decreased renal blood flow.
D) generalized edema.

Question

Quizplus · Accepted Answer

ADH secretion is mainly regulated by the osmoreceptors in the hypothalamus, which detect changes in plasma osmolality. When plasma osmolality increases, ADH secretion is stimulated, leading to water reabsorption in the kidneys and decreased urine output. This helps to maintain water balance in the body. Increased serum potassium (A) does not directly stimulate ADH secretion. Decreased renal blood flow (C) may activate the renin-angiotensin-aldosterone system, which can indirectly affect water balance, but does not directly stimulate ADH secretion. Generalized edema (D) may be a sign of fluid retention, but does not directly stimulate ADH secretion.

Secretion of Antidiuretic Hormone (ADH) Is Stimulated By