Central reproductive hormones Neuroendocrine regulation 1. Gonadotropin-releasing hormone, GrRH chemical structure ( Pro)Glu-Hlis-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH 2)Synthesize and transport nerve cells portal vein anterior lobe hypothalamus pitutaryCentral reproductive hormones • Neuroendocrine regulation 1. Gonadotropin-releasing hormone,GnRH 1) chemical structure (pro)Glu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2 2) Synthesize and transport nerve cells hypothalamus portal vein pitutary anterior lobe