01 / Location & anatomical relationships
Below the penis, outside the pelvis.
02 / Structure & organization
The scrotal wall contains skin and dartos smooth muscle, with deeper coverings related to the testes and spermatic cords. Cremaster muscle activity changes testicular position. A septum separates the two sides.
03 / Function
It helps keep them at a suitable temperature.
04 / Mechanism
Its skin and underlying muscles can tighten or relax, changing how close the testes sit to the body. This helps regulate temperature. It also provides an outer covering around the testes.
Working together: reproductive system
Bodies develop in different ways. During puberty, hormones help reproductive organs mature. A pregnancy can begin when a sperm cell fertilizes an egg cell, and development continues in the uterus.
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Connect structure with function
Temperature regulation involves surface area, position and countercurrent exchange in the pampiniform venous plexus. The scrotum protects and supports the testes without being their secretory tissue.
Check your understanding
Locate the scrotum in relation to its neighbors. Explain how the structural features described above support its function, then distinguish it from a nearby structure with a different role.
Keep learning
Continue with OpenStax Anatomy and Physiology for system-level study. This atlas is educational and has not undergone independent medical peer review.