Which Glands Secrete Oil?
Sebaceous glands, also known as oil glands, secrete oil. These glands are found throughout the body, but are particularly concentrated on the face, scalp, and back. They produce sebum, an oily substance that lubricates the skin and hair, preventing dryness and cracking.
Several types of glands contribute to oil secretion:
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Sebaceous glands: These are the primary oil-producing glands in the skin. They are simple branched alveolar glands that secrete sebum through the hair follicles. Sebum keeps the skin and hair moisturized and prevents dryness. Source: Sebaceous Glands: Function, Location & Secretion and Source: Aging changes in skin: MedlinePlus Medical Encyclopedia
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Meibomian glands: Located along the edges of the eyelids, these glands produce an oily substance that helps maintain the tear film, preventing evaporation and keeping the eyes lubricated. Source: Meibomian Glands - American Academy of Ophthalmology
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Other glands with oil secretion: While not solely oil-producing, certain animal glands secrete oily substances for waterproofing (e.g., otter glands). Source: minnesota mustelids
The Role of Sebum
Sebum's primary function is to:
- Lubricate the skin and hair: Preventing dryness, cracking, and brittleness.
- Protect against pathogens: Sebum has some antimicrobial properties.
The amount of sebum produced varies depending on factors like age, hormones, and genetics. Excessive sebum production can contribute to acne. Source: Acne | Johns Hopkins Medicine
Sebaceous Gland Mechanism
Sebaceous glands are holocrine glands, meaning the cells themselves rupture to release their oily contents (sebum). [Source: SEBACEOUS GLANDS](Provided text) and Source: The type of dermal glands that secrete oils for lubrication and ...
