What is the primary function of the dermis?

The primary function of the dermis is to support blood vessels, lymphatic vessels, and glands. The dermis is the thick layer of skin located beneath the epidermis and plays a crucial role in maintaining skin integrity and overall function. It contains a network of collagen and elastin fibers that provide structural support and elasticity to the skin, allowing it to withstand tension and stretching.

In addition to its supportive role, the dermis houses essential components like blood vessels, which supply nutrients and oxygen to the skin while helping to regulate temperature. The presence of lymphatic vessels helps in the immune response and fluid balance, and various glands, including sweat and sebaceous glands, are key to maintaining skin moisture, temperature regulation, and protection.

This multi-functional aspect of the dermis underscores its importance in the integumentary system, distinguishing it from the epidermis, which primarily serves as a protective outer barrier, and the subcutaneous layer, which is more involved in fat storage and insulation.