Health student in Ghana. I can help you with all your assignments ie. anatomy, physiology, pathology, radiological anatomy, physics and many more. As far as you are interested in sonography and radiology come on I will help you out. You can read my notes also and I can I also help you learn. Hormonal interactions • Certain neurons in the hypothalamus produce luteinizing hormone- releasing hormone • (LHRH), aka, gonadotropin-releasing hormone (GnRH) • LHRH initiates release of LH and FSH from adenohypophysis • LH and FSH stimulate testicular hormone production • LH stimulates the interstitial cells of Leydig to ... • FSH promotes the synthesis of ABP by Sertoli cells • Testosterone is needed for normal dev of sperms and secondary sex characteristics • ABP binds testosterone and maintains it at a high concentration in the seminiferous tubule • ABP facilitate succession of spermatogonia into spermatozoa Inhibition and stimulation of FSH and LH release • Excessive levels of testosterone inhibit LH release • Lnhibin secreted by Sertoli cells inhibits GnRH, and impedes FSH release from hypophysis • Activin secreted by Sertoli cells, stimulates the release of GnRH leading to FSH release