Anatomy of the Testes Most males are born with two testes (testicles). These are soft, egg-shaped organs located inside the scrotum. One testicle is referred to as a testis.

People with male reproductive anatomy usually have two testicles (testes). Their primary function is to produce sperm and testosterone.

What is the male reproductive system and how does it work? Read on to learn more about the function and anatomy of the external and internal male reproductive organs.