The testes are located outside the abdominal cavity in the scrotum because sperm formation, or spermatogenesis, requires a lower temperature than the normal body temperature. This arrangement is significant for optimal sperm production. The scrotum provides a cooler environment, maintaining the testes at a temperature slightly below the body’s core temperature. Spermatogenesis is a highly sensitive process, and the lower temperature in the scrotum is essential for the proper development and maturation of sperm cells. If the testes were located inside the warm abdominal cavity, the elevated temperature could impair sperm production and quality. Therefore, the external positioning of the testes in the scrotum ensures an environment conducive to efficient spermatogenesis, crucial for male reproductive function.