How Many Days Left for NEET 2025? - Countdown NEET 2025

Hormonal Control of Male Reproductive System MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

Quick Facts

Hormonal Control of Male Reproductive System is considered one of the most asked concept.
15 Questions around this concept.

Which hormone in mammals causes the emergence of masculine sexual characteristics?

Estrogen

Progesterone

Testosterone

Follicle-stimulating hormone (FSH)

Hormonal Control of Male Reproductive System

At the onset of puberty, the hypothalamus causes the release of FSH and LH into the male system for the first time from the pituitary through the release of GnRH.
FSH enters the testes and stimulates the Sertoli cells to begin facilitating spermatogenesis.
LH also enters the testes and stimulates the interstitial cells of Leydig to make and release testosterone into the testes and the blood.
Testosterone, the hormone responsible for the secondary sexual characteristics that develop in the male during adolescence, stimulates spermatogenesis.
These secondary sex characteristics include a deepening of the voice, the growth of facial, axillary, and pubic hair, and the beginnings of the sex drive.
A negative feedback system occurs in the male with rising levels of testosterone acting on the hypothalamus and anterior pituitary to inhibit the release of GnRH, FSH, and LH.
The Sertoli cells produce the hormone inhibin, which is released into the blood when the sperm count is too high.
This inhibits the release of GnRH and FSH, which will cause spermatogenesis to slow down.
If the sperm count reaches 20 million/ml, the Sertoli cells cease the release of inhibin, and the sperm count increases.