The Pituitary Hormone That Stimulates the Interstitial Endocrine Cells to Secrete

Question

The pituitary hormone that stimulates the interstitial endocrine cells to secrete testosterone is
A) FSH.
B) LH.
C) ACTH.
D) GnRH.
E) GH.

Accepted Answer

LH (luteinizing hormone) is the pituitary hormone that stimulates the Leydig cells in the testes to secrete testosterone. FSH (follicle-stimulating hormone) also plays a role in male reproductive function by stimulating the Sertoli cells in the testes to support sperm production, but it does not directly stimulate testosterone production. ACTH (adrenocorticotropic hormone) stimulates the adrenal gland to produce cortisol, not testosterone. GnRH (gonadotropin-releasing hormone) is released from the hypothalamus and stimulates the pituitary gland to release LH and FSH. GH (growth hormone) stimulates growth and development and has no direct effect on testosterone production.