Scrotum

Definition

The scrotum is an external pouch of skin and muscle that contains the testes. It plays a crucial role in regulating the temperature necessary for sperm production.

5 Must Know Facts For Your Next Test

1. The scrotum maintains an optimal temperature for spermatogenesis, typically a few degrees cooler than body temperature.
2. It contains smooth muscle fibers called the dartos and cremaster muscles, which help regulate its position relative to the body.
3. The scrotum is divided into two compartments, each holding one testis.
4. Temperature regulation by the scrotum is vital because high temperatures can impede sperm production and function.
5. The presence of sweat glands in the scrotal skin also aids in temperature regulation through evaporative cooling.

Review Questions

• What role does the scrotum play in sperm production?
• How do the dartos and cremaster muscles contribute to the function of the scrotum?
• Why is it important for the scrotum to maintain a temperature slightly lower than core body temperature?

Related terms

Testes: Male reproductive organs housed within the scrotum responsible for producing sperm and testosterone.

Spermatogenesis: The process of sperm cell development that occurs within the seminiferous tubules of the testes.

Cremaster Muscle: A muscle that raises and lowers the testes to regulate their temperature.