The functions of the hormone testosterone from the testicular.. Maturation of organs of the reproductive system and the appearance of secondary sexual characteristics

Testosterone, which is produced by the testis, works on:
* Maturation of organs of the reproductive system.
* The emergence of manifestations of puberty in the male (secondary sexual characteristics) such as:
- Coarse sound.
- Growth of armpit hair, pubic, chin, mustache.
- Muscle growth.