These hormones act on specific target organs to maintain homeostasis. The adenohypophysis, often referred to as the anterior pituitary, is the glandular front portion of the pituitary gland.
Adenohypophysis Structure Function Overview
Key Hormones Secreted Growth Hormone (GH): Stimulates growth, cell reproduction, and regeneration. Anatomical Structure and Location Anatomically, the pituitary gland is divided into two distinct lobes with different origins and functions.
Its rich vascular network, specifically the hypothalamo-pituitary portal system, allows it to receive regulatory signals directly from the hypothalamus via specialized blood vessels. Adrenocorticotropic Hormone (ACTH): Stimulates the adrenal cortex to produce cortisol.
Adenohypophysis Structure and Function: An Overview
The adenohypophysis is composed of three distinct regions: the pars distalis, the largest part which contains the hormone-producing cells; the pars tuberalis, which wraps around the infundibulum; and the pars intermedia, a thin layer situated between the anterior and posterior lobes. Hyposecretion, or hypopituitarism, may result from tumors, head trauma, or ischemic events, leading to deficiencies in one or more hormones.
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