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BIOLOGY

JAMB 2010 - Question 21

Biology 2010 JAMB Past Questions - Question 21: The oily substance that lubricates the mammalian hair to keep it flexible and water repellent is secreted by the

Choose the most appropriate option for the gap .

The oily substance that lubricates the mammalian hair to keep it flexible and water repellent is secreted by the

A: sebaceous glands

B: fatty cells

C: granular layer

D: sweat glands

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Correct Answer

Explanation

Sweat glands secrete sweat. Fatty cells are located at the subcutaneous layer. The fat cells store fat that insulates the body. Granular layer consists of living cells that are pushed into the cornified layer of the skin. As the dead cells of the cornified layer peel off, they are replaced by living cells of granular layer.