What is the function of sebaceous glands in the skin?

Sebaceous glands play a vital role in maintaining skin health by producing an oily substance known as sebum. This oily secretion helps lubricate the skin and hair, preventing dryness and providing a barrier against external elements. Sebum also contains antimicrobial properties that can protect the skin from some bacteria and fungi, contributing to the overall integrity and health of the skin.

While sweat glands are responsible for producing sweat to help cool the body, and collagen production is associated with the skin's structural integrity, those functions are not related to sebaceous glands. Additionally, body temperature regulation is primarily managed through the action of sweat and blood flow adjustments, rather than the production of oil by sebaceous glands. Thus, the role of sebaceous glands in creating an oily substance that moisturizes and protects the skin is essential for maintaining skin integrity and overall health.