Question

What is Testosterone?

Answer 1

Testosterone is a steroidal hormone secreted in males. The male reproductive system includes testis, accessory ducts, glands, and external genitalia. Testis produces testosterone. Testis is present in the scrotal sac outside the abdomen in male individuals. Testis function as a primary sex organ and also as an endocrine gland.

Complete answer:
Testosterone is a steroid hormone. It is the primary sex hormone in males.
The testis is composed of the testicular lobule. Testicular lobules consist of seminiferous tubules and interstitial or Leydig cells.
Leydig cells secrete and synthesize testicular hormones called androgens or testosterone.
Testosterone plays a major stimulatory role in the process of spermatogenesis. Testosterone regulates the development, maturation, and function of the male accessory sex organs like epididymis, vas Reverend, etc. these hormones stimulate muscular growth, facial and axillary hair development. It increases aggressiveness in males. It is responsible for deepening of voice in males. Testis and Penis also enlarge because of increased production of testosterone during puberty.
Testosterone levels also regulate the mood in males.
Testosterone is a hormone found in humans, as well as in other animals. In men, the testicles primarily make testosterone.
The production of testosterone starts to rise reasonably during puberty and begins to dip after age 30 or so.
Hypothalamus releases GnRH hormone which stimulates Pituitary gland to release LH and FSH in males. LH acts on leydig cells and produces androgens or testosterone which helps in sperm formation or spermatogenesis. FSH produced by Pituitary act on Sertoli cells and stimulates the secretion of some factors which help in process of spermiogenesis

Note:
Women’s ovaries also make testosterone, though in much smaller amounts.
A decreased level of testosterone stimulates the Pituitary gland to produce LH in large amounts and in this way they increase the testosterone level.
An increased level of testosterone inhibits the release of GnRH and LH hormones.
This mechanism is called the feedback mechanism through which level of testosterone is regulated.