The predominant excitatory input for both vasopressin secretion and thirst comes from:

Question

The predominant excitatory input for both vasopressin secretion and thirst comes from:​

Quizplus · Accepted Answer

Vasopressin secretion and thirst are tightly regulated by the hypothalamus. The primary excitatory input for both is the stimulation of hypothalamic osmoreceptors in response to changes in extracellular fluid (ECF) electrolyte concentration. When ECF osmolality increases, hypothalamic osmoreceptors promote thirst and stimulate vasopressin secretion to increase water reabsorption in the kidneys and conserve body water. Thus, option E, hypothalamic osmoreceptors, is the best choice for this question.

The Predominant Excitatory Input for Both Vasopressin Secretion and Thirst