What is the function of sebaceous glands?

Sebaceous glands play a crucial role in the skin's health and appearance by secreting oils, specifically sebum. Sebum is a natural lubricant that helps to keep the skin moisturized and provides a barrier against environmental factors. This oily substance prevents the skin from becoming too dry, which can lead to irritation and other skin issues.

The function of sebaceous glands is vital for maintaining skin hydration and elasticity, thereby contributing to an overall healthy appearance. By secreting oils, they help to protect against pathogens and support the skin's microbiome. This secretion also contributes to the natural sheen of the skin, which is often associated with healthy skin.

While other options present different functions associated with skin and body health, they do not pertain directly to the role of sebaceous glands. Perspiration is primarily excreted by sweat glands, detoxification involves processes linked to organs such as the liver and kidneys, and temperature regulation is mainly managed by the body's sweat glands and blood vessels. Thus, the primary function of sebaceous glands is rightly identified as the secretion of oils, which is essential for maintaining skin vitality.