The gland that regulates hormones is the:

• A. Pituitary gland
• B. Pineal gland
• C. Hypothalamus
• D. Cerebellum

Answer: (A)

Endocrine regulation centers on the pituitary gland as the master regulator of hormones. It releases a suite of tropic hormones that stimulate other endocrine glands—the thyroid, adrenal cortex, and gonads—so its signals set the activity and hormone output across the body. It also receives input from the hypothalamus, translating neural signals into hormonal commands that control how loudly other glands respond. The pineal gland mainly makes melatonin to influence sleep-wake cycles, not the broad regulation of other glands. The cerebellum isn’t involved in hormone control at all, focusing on motor coordination. So the pituitary gland best fits the idea of a gland that regulates hormones.