The scrotum is a pouch of skin located behind the penis in males. It contains the testes, which produce sperm and hormones like testosterone. The scrotum helps regulate the temperature of the testes, keeping them slightly cooler than the body's core temperature, which is essential for sperm production. The scrotum has two compartments, each housing one testis. It is made up of skin and muscle tissue, allowing it to contract or relax to maintain optimal temperature. This process is vital for male reproductive health and is influenced by factors such as temperature and sexual arousal.