Question Detail
Question
Which one of the following is not under the direct control of pituitary gland with respect to the regulation of its secretory function?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The adrenal medulla is not under direct control of the pituitary gland. It is regulated by the sympathetic nervous system (preganglionic sympathetic fibers). In contrast, the adrenal cortex (A) is regulated by ACTH from the pituitary, the thyroid (C) by TSH from the pituitary, and the testis (D) by FSH and LH from the pituitary.
Hint
This endocrine gland is directly innervated by the sympathetic nervous system rather than being controlled by a pituitary tropic hormone.