What is the function of the sebaceous gland?

The correct answer highlights the primary role of the sebaceous gland, which is to secrete sebum. Sebum is an oily substance that helps to lubricate and waterproof the skin and hair. This secretion plays a crucial role in maintaining the barrier function of the skin, preventing dehydration, and protecting against certain pathogens.

While sweat is produced by sweat glands and is important for thermoregulation, the sebaceous glands are specifically involved in the production of sebum. Filtering toxins is primarily a function of the liver and kidneys, not the sebaceous glands. Additionally, temperature regulation is mainly managed by sweat glands and blood circulation rather than sebaceous glands. Therefore, understanding the specific function of the sebaceous glands clarifies why their role in secreting sebum is foundational to skin health.