The Physiological Basics
"Balls" is not exactly a scientific term. The main structures of that make up the balls are the testicles, the epididymis, and the scrotum. The testicles are oval-shaped organs that make testosterone, a hormone involved in all kinds of male functioning and development. Testosterone also plays a role in generating sperm, which is produced in tubes within the testes. The epididymis is a tube located on the back of each testicle. It transports and stores sperms cells and is where sperm matures. The scrotum is the loose sac of skin that holds the testicles. It's role is protect the testes by regulating their temperature and moving them away from danger.