Which hormone is NOT produced by the anterior pituitary gland?

The anterior pituitary gland produces several key hormones that are vital for various physiological processes, including growth, metabolism, and stress response. Among the hormones it secretes are growth hormone (GH), thyroid-stimulating hormone, and adrenocorticotropic hormone, all of which play significant roles in regulating bodily functions.

Anti-diuretic hormone (ADH), however, is not produced by the anterior pituitary gland. Instead, ADH is synthesized in the hypothalamus and stored and released by the posterior pituitary gland when needed. This hormone is primarily involved in regulating water balance in the body by controlling the kidneys' ability to reabsorb water, thus helping to maintain blood pressure and fluid balance. Understanding the distinction between the anterior and posterior sections of the pituitary gland is essential for grasping the role of these hormones in the endocrine system.