ACTH ________.
A) is secreted by the posterior pituitary
B) secretion is regulated by a hypothalamic regulatory hormone
C) causes the release of hormones from the adrenal medulla
D) is not a tropic hormone

Question

Quizplus · Accepted Answer

ACTH (adrenocorticotropic hormone) is secreted by the anterior pituitary and its secretion is regulated by the hypothalamic regulatory hormone, corticotropin-releasing hormone (CRH). It stimulates the adrenal cortex to secrete glucocorticoids, which are involved in metabolism, immune function, and stress responses. It does not cause the release of hormones from the adrenal medulla, which is regulated by the sympathetic nervous system. Therefore, the best choice is B.