Q: What stimulates the pituitary gland in order to maintain structural integrity of the thyroid?\nOptions:\n- (A) TRH\n- (B) Urea\n- (C) CO 2\n- (D) PDAs\n- (E) HPV\n- (F) SO2\n- (G) mL\n- (H) p53
Let's think step by step below.

User
TRH stimulates the pituitary gland to produce thyroid-stimulating hormone, or TSH. Another function of TSH is to maintain the structural integrity of the thyroid gland. TRH stimulates the pituitary gland to maintain structural integrity of the thyroid.
Thus, the answer is (A).
Assistant