Male Reproductive System - The gonadotropin releasing hormone

566

0

HWC

By: HWC

Date Uploaded: 10/02/2019

Tags: human body   Male Reproductive System  

• Hormonal mechanisms that influence male reproductive function involve endocrine tissues contained in the: • Hypothalamus of the brain. • Anterior pituitary. • Testes. • In the hypothalamus, certain neurosecretory cells secrete gonadotropin- releasing hormone (GnRH). • GnRH is carried by the blood to the anterior pituitary, where it binds to receptors on gonadotrophs. • GnRH then stimulates gonadotroph cells to increase secretion of two gonadotropic hormones: • Lutenizing hormone (LH). • Follicle-stimulating hormone (FSH). • LH and FSH are transported in the blood to the testes from the anterior pituitary. • LH and FSH both indirectly affect spermatogenesis. • LH binds to receptors on Leydig (interstitial) cells between seminiferous tubules and stimulates the secretion of testosterone. • Under the influence of FSH and testosterone, Sertoli cells produce Androgen-binding protein (ABP) that binds and maintains high testosterone levels near the spermatogenic cells.

Share

Embed

Copy and paste this code into your website or blog.

Add To

You must login to add videos to your playlists.

Comments

0 Comments total

to post comments.

No comments have been posted for this video yet.