Testosterone and Male Reproductive Control

Testosterone and male reproductive control depend on a hormone signal from the brain. The hypothalamus releases gonadotropin-releasing hormone, or GnRH. GnRH tells the pituitary gland to release follicle-stimulating hormone (FSH) and luteinizing hormone (LH).

LH acts on Leydig cells in the testes...

Gonadotropin-releasing hormone from the hypothalamus stimulates the pituitary gland to release follicle-stimulating hormone, FSH and luteinizing hormone, LH triggers the production of testosterone.

LH travels through the bloodstream to the testes, stimulating the Leydig cells to produce and release testosterone.

LH and FSH stimulat...