Which type of gland in the skin is responsible for secreting oil?

The sebaceous gland is the type of gland in the skin that is responsible for secreting oil, specifically sebum. Sebum is a natural oil that helps to lubricate and waterproof the skin and hair, maintaining their health and cleanliness. The sebaceous glands are typically associated with hair follicles and release their secretion into the follicle, which then spreads over the skin surface. This oily secretion plays a crucial role in protecting the skin from drying out and helps to create a barrier against bacteria and other pathogens.

In contrast, sweat glands primarily produce a watery secretion that aids in temperature regulation and excretion of waste, rather than oil. Salivary glands are located in the mouth and produce saliva for digestion, not in the skin. Endocrine glands secrete hormones directly into the bloodstream, functioning primarily in the regulation of bodily processes rather than oil production in the skin.