What is the role of the scrotum?

The scrotum's primary function is to act as a protective sac for the testicles. By providing an external environment, it helps regulate the temperature necessary for proper sperm production and health. The scrotum can move closer to or further away from the body to maintain an optimal temperature, as sperm production requires a slightly cooler temperature than the body's core temperature. This thermoregulation is crucial because elevated temperatures can adversely affect sperm quality and fertility. Thus, the protective and thermoregulatory roles of the scrotum are vital for male reproductive health.