Which gland is located in the brain and regulates other glands?

• A. Thyroid
• B. Pituitary
• C. Adrenal
• D. Pancreas

Answer: (B)

The main concept is identifying the gland that sits in the brain and controls other endocrine glands. The pituitary gland is located at the base of the brain, just under the hypothalamus, and it releases hormones that regulate many other glands. Its anterior part sends out tropic hormones such as TSH, ACTH, FSH, LH, and growth hormone, guiding the thyroid, adrenal cortex, gonads, and overall growth. The hypothalamus directs the pituitary with releasing hormones, forming a control axis that coordinates endocrine function. The other glands listed—the thyroid, adrenal, and pancreas—are not located in the brain and, while they respond to signals from the pituitary, are not the brain’s gland responsible for regulating others.