1. The hypothalamus secretes gonadotropin-releasing hormone (GnRH) at puberty which activates the anterior pituitary gland. 2. The anterior pituitary then produces and secretes follicle stimulating hormone (FSH) and luteinizing hormone (LH) which travel to the testes. 3. At the testes, FSH acts on Sertoli cells to stimulate sperm production while LH stimulates Leydig cells to secrete testosterone which further stimulates sperm production and promotes secondary male sex characteristics.

1. hormones that
control male
reproduction
By: Abdulsalam Othman

2. Hypothalamus Anterior pituitary
1.Recall that the hypothalamus & anterior pituitary work
together to control hormone release in the endocrine
System
2.Releasing hormones from the hypothalamus act on the
anterior pituitary to cause the release of tropic hormones.

3. 1.At puberty, the hypothalamus secretes gonadotropin-
releasing hormone (GnRH).
2.GnRH activates the anterior pituitary gland to produce
and secrete follicle stimulating hormone (FSH) and
luteinizing hormone (LH).
3.FSH and LH travel in the blood to the testes.
Male Reproductive Hormones

4. FSH & LH
• Upon arrival at the testes. FSH and LHact upon different
types of cells.
• FSH acts on the Sertoli cells to stimulate sperm
production.
• LH stimulates the interstitial (Leydig) cells to secrete
testosterone.

5. Testosterone
• .Further stimulates the production of sperm cells.
• Promotes the development of secondary male sex
characteristics.
• - development of facial and body hair
• growth of the larynx, which causes lowering of the
voice
• -strengthening of muscles
• -increased secretion of body oils (causing acne)
• Associated with sex drive

7. Thank you