The scrotum

Answer 1

The scrotum is a sac of skin and muscle that contains the testicles in males. It has important functions in protecting the testicles and regulating their temperature. When the temperature is too warm, the scrotum relaxes and allows the testicles to hang away from the body, helping to cool them down. When it is too cold, the scrotum contracts and brings the testicles closer to the body to keep them warm. The scrotum is also sensitive and can be stimulated during sexual activity.