ATI Pathophysiology Practice Exam 2025 – All-in-One Guide to Master Your Exam Success!

The hormone that is secreted by the posterior pituitary gland is anti-diuretic hormone (ADH), also known as vasopressin. The posterior pituitary does not actually produce hormones; instead, it stores and releases hormones that are synthesized in the hypothalamus. ADH plays a crucial role in regulating water balance within the body by promoting water reabsorption in the kidneys, thus concentrating urine and helping to maintain blood pressure.

In contrast, the other hormones listed are produced and secreted by the anterior pituitary gland. Adrenocorticotropic hormone (ACTH) regulates the adrenal cortex, thyroid-stimulating hormone (TSH) stimulates the thyroid gland, and growth hormone (GH) influences growth and metabolism. Understanding the origin and function of these hormones is vital for grasping their roles in the endocrine system and overall physiological processes.