Sebaceous Glands
secrete sebum (oil) into the hair follicles where the hair shafts pass through the dermis
Sebaceous glands are small glands that are present in the skin of mammals. Their primary function is to produce and secrete an oily, waxy substance called sebum. Sebum is composed of lipids, wax esters, and triglycerides.
Sebaceous glands are most abundant on the face, scalp, and upper chest and back. They are connected to hair follicles and their secretions are released into the follicle, which then carries the sebum to the surface of the skin.
Sebum has several important functions in the skin. It helps to lubricate and waterproof the skin, keeping it from becoming dry and cracked. Sebum also helps to protect the skin from pathogenic microorganisms by creating an acidic environment that can kill or inhibit the growth of bacteria.
However, overproduction or blockage of sebum can lead to several skin problems. Acne is a common skin condition that occurs when a buildup of sebum and dead skin cells clogs the hair follicles. This can lead to the formation of pimples, blackheads, and whiteheads.
Overall, sebaceous glands play an important role in maintaining healthy skin, but their overactivity or dysfunction can cause skin problems.
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