The master gland that produces many hormones controlling the function of other endocrine glands is the pituitary gland. It is a small, pea-sized gland located at the base of the brain. The pituitary gland is often referred to as the "master gland" because it controls the secretion of hormones from other endocrine glands, including the thyroid gland, the adrenal glands, and the ovaries and testes. The pituitary gland produces several hormones, including growth hormone, prolactin, adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), follicle-stimulating hormone (FSH), and luteinizing hormone (LH). These hormones regulate a wide range of bodily functions, including growth, metabolism, reproduction, and stress response.