This seventh article of an eight-part series examines the anatomy and physiology of the testes and ovaries, as well as their role in producing a variety of steroid hormones that influence many diverse ...

People with male reproductive anatomy usually have two testicles (testes), commonly called balls. The function of testicles is to produce sperm and testosterone, which is a male sex hormone.

This seventh article of an eight-part series examines the anatomy and physiology of the testes and ovaries, as well as their role in producing a variety of steroid hormones that influence many diverse ...