GENERAL HISTOLOGY

Detailed explanation-1: -The normal function of sebaceous glands is to produce and secrete sebum, a group of complex oils including triglycerides and fatty acid breakdown products, wax esters, squalene, cholesterol esters and cholesterol. Sebum lubricates the skin to protect against friction and makes it more impervious to moisture.

Detailed explanation-2: -The sebaceous gland contributes the vast majority of skin surface lipids via its main product, sebum, which helps to seal in moisture and prevent desiccation of the skin. Because sebaceous glands empty into the hair canal, sebum mostly escapes onto the skin surface via a wicking action involving the hair shaft.

Detailed explanation-3: -Sebaceous glands enlarge and become functionally active during puberty. They are found everywhere on the body, except the palms and soles, and are most abundant on the face and scalp.

Detailed explanation-4: -Other sebaceous glands are Fordyce spots, areolar glands, and preputial glands. See also: Meibomian gland. Holocrine gland.