what is scrotum in male reproductive system

The scrotum is a part of the male reproductive system that is located below the penis. It is a loose bag of skin that hangs outside the body and holds the testes in place. The scrotum is a thin external sac of skin that is divided into two compartments, each containing one of the two testes. The scrotum is a unique anatomical feature of humans and certain other species of land-dwelling mammals. The testes are responsible for producing sperm and testosterone, which is the male sex hormone. The temperature of the testes needs to be cooler than the inside of the body for normal sperm development, and the scrotum provides a sort of “climate-control system” to achieve this. The scrotum has special muscles in its wall that let it contract and relax, allowing it to move the testicles closer to the body for warmth and protection or away from the body to cool them. The structures contained in the scrotum include external spermatic fascia, testes, epididymis, and spermatic cord.