Which gland is often called the master gland due to regulating other glands?

Which gland is often called the master gland due to regulating other glands?

• A. Pituitary gland
• B. Adrenal cortex
• C. Pineal gland
• D. Thymus

Answer: (A)

The main idea is that one gland can regulate the activity of several other endocrine glands by releasing hormones that act on them. The pituitary gland fits this role because it issues multiple hormones that stimulate other glands: thyroid-stimulating hormone (TSH) to the thyroid, adrenocorticotropic hormone (ACTH) to the adrenal cortex, and the gonadotropins (LH and FSH) to the ovaries or testes. It also releases growth hormone that affects growth and metabolism, and prolactin for lactation. The pituitary is controlled by the hypothalamus through releasing and inhibiting signals, forming a central axis that coordinates these targets. The posterior part of the pituitary stores and releases vasopressin and oxytocin, but the standout regulatory function comes from the anterior pituitary’s hormones. The other glands listed—adrenal cortex, pineal gland, and thymus—do not regulate a broad group of other glands in the same way.

The main idea is that one gland can regulate the activity of several other endocrine glands by releasing hormones that act on them. The pituitary gland fits this role because it issues multiple hormones that stimulate other glands: thyroid-stimulating hormone (TSH) to the thyroid, adrenocorticotropic hormone (ACTH) to the adrenal cortex, and the gonadotropins (LH and FSH) to the ovaries or testes. It also releases growth hormone that affects growth and metabolism, and prolactin for lactation. The pituitary is controlled by the hypothalamus through releasing and inhibiting signals, forming a central axis that coordinates these targets. The posterior part of the pituitary stores and releases vasopressin and oxytocin, but the standout regulatory function comes from the anterior pituitary’s hormones. The other glands listed—adrenal cortex, pineal gland, and thymus—do not regulate a broad group of other glands in the same way.