The oily substance that lubricates the mammalian hair to keep it flexible and water repellent is secreted by the?
- sweat glands
-
sebaceous glands
- fatty cells
- granular layer
The correct answer is: B
Explanation
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.
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