Gonadotropic hormones and their effect on ovaries

The ovarian changes during the female sexual cycle depend completely on the hormones FSH and LH secreted by the anterior pituitary.

Androgen

Androgenic steroid hormones are the male sex hormones, their function are:

1- Differentiation of the male reproductive tract and brain during fetal life.

2- Stimulation of the testis descend during the last three months of gestation.

Interstitial cells of leydig

The principal function of leydig cells is to produce androgens. Leydig cells begin to secrete androgens during the 7th week of fetal life in response to hCG (human chorionic gonadotropin) which is

Inhibin + Androgen binding protein + Estrogen

Inhibin

Is a protein that selectively inhibits the synthesis and secretion of FSH by the pituitary gonadotropes.

Sertoli cells

Sertoli cells have many functions:

1- Provision of nutrients to germ cells.

2- Synthesis of multiple proteins that are secreted into the luminal fluid including caeruloplasm

testes

The testes serve three main functions:

1- Production of gametes.

2- Secretion of hormones that cause differentiation of the brain and reproductive tract during fetal and neonatal development, maintain the structure and function of the reproductive tract, it promotes the development of sexual characteristics.

Anatomy of male reproductive system

The testis composed of 900 coiled seminiferous tubules, each 

average more than 5 meters length in which the sperms are 

found. Between the seminiferous tubules are the interstitial 

cells of leydig for synthesis of testosterone. The sperms pass 

from the