The testis is an organ located in the male reproductive system, responsible for producing hormones and sperm. It is composed of two main parts: the seminiferous tubules, which produce sperm, and the interstitial tissue, which produces hormones. The testis is the primary source of the male hormone testosterone, which plays an important role in male sexual development. Testosterone helps to regulate the development of male secondary sex characteristics, such as facial and body hair, deepening of the voice, and muscle growth.
Testis,
male reproductive system