Hypothalamic-Pituitary-Gonadal Axis

**Definition:** A collection of NEURONS, tracts of NERVE FIBERS, endocrine tissue, and blood vessels in the HYPOTHALAMUS, the PITUITARY GLAND and the GONADS. It plays a central role in endocrine regulation of gonadal function including release of hormones: GNRH; LUTEINIZING HORMONE; FOLLICLE-STIMULATING HORMONE and TESTOSTERONE.

**Tree numbers:** - A06.688.357.250 - A08.186.211.180.497.352.435.125 - A08.186.211.200.317.357.352.435.125 - A08.713.357.250

**Synonyms:** - Hypothalamic-Pituitary-Gonadal Endocrine Axis - HPG Axis