Sebaceous glands produce what oily secretion?

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Study for the Glencoe Health Exam. Prepare with interactive flashcards and multiple-choice questions. Each question includes hints and detailed explanations. Get ready for your health exam!

Multiple Choice

Sebaceous glands produce what oily secretion?

Explanation:
Oily lubrication in the skin comes from sebaceous glands, which produce sebum. Sebum is an oily, waxy substance that coats hair and skin, helping to moisturize and waterproof the surface and support the skin’s barrier against bacteria. It is released by holocrine secretion, where the gland cells rupture to release their contents. The other options come from different sources: sweat is produced by sweat glands and is mostly water and salts; melanin is pigment made by melanocytes; keratin is a protein produced by keratinocytes that forms part of the skin’s outer protective layer. So the oily secretion produced by sebaceous glands is sebum.

Oily lubrication in the skin comes from sebaceous glands, which produce sebum. Sebum is an oily, waxy substance that coats hair and skin, helping to moisturize and waterproof the surface and support the skin’s barrier against bacteria. It is released by holocrine secretion, where the gland cells rupture to release their contents. The other options come from different sources: sweat is produced by sweat glands and is mostly water and salts; melanin is pigment made by melanocytes; keratin is a protein produced by keratinocytes that forms part of the skin’s outer protective layer. So the oily secretion produced by sebaceous glands is sebum.

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