Negative feedback loops to the hypothalamus and the pituitary operate to regulate the levels of ____, the most important regulator of thyroid hormone secretion.
A) TRH
B) thyroid hormone
C) TSH
D) ADH
E) calcitonin

Question

Quizplus · Accepted Answer

TSH (Thyroid Stimulating Hormone) is the most important regulator of thyroid hormone secretion, and its levels are regulated by negative feedback loops involving the hypothalamus and pituitary.

Negative Feedback Loops to the Hypothalamus and the Pituitary Operate