Which stimulates vasopressin secretion?

Question

Quizplus · Accepted Answer

Vasopressin secretion is stimulated by an increase in plasma osmolarity, which indicates that the body needs to conserve water. Vasopressin helps to increase water reabsorption in the kidneys, leading to a decrease in urine output and an increase in plasma volume. Increased plasma volume (choice B) would actually lead to a decrease in vasopressin secretion because the body does not need to conserve water in this situation. Ingestion of alcohol (choice C) can inhibit vasopressin secretion, leading to increased urine output and dehydration. Decreased aldosterone secretion (choice D) would not have a direct effect on vasopressin secretion, as these hormones have different functions in regulating electrolyte and fluid balance. Increased pressure in afferent arterioles (choice E) may have an effect on renal blood flow and glomerular filtration rate, but it is not directly related to the regulation of vasopressin secretion.

Which Stimulates Vasopressin Secretion