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Sebaceous glands
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Microbiology
Definition
Sebaceous glands are small oil-producing glands present in the skin. They secrete sebum, which lubricates and waterproofs the skin and hair.
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5 Must Know Facts For Your Next Test
- Sebaceous glands are most densely located on the face and scalp but are found throughout all areas of the skin except the palms and soles.
- The primary secretion of sebaceous glands is sebum, a mixture of lipids that helps maintain skin hydration and barrier function.
- Overactivity or blockage of sebaceous glands can lead to conditions such as acne, characterized by inflammation and infection.
- Sebum has antimicrobial properties that play a role in protecting against certain pathogens and maintaining normal skin microbiota.
- Hormonal changes, particularly during puberty, can significantly affect the activity of sebaceous glands.
Review Questions
- What is the primary function of sebum secreted by sebaceous glands?
- Which areas of the body lack sebaceous glands?
- How do hormonal changes influence sebaceous gland activity?
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