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JAMB Biology 2010 Question 21

Question 21

Homeostasis

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

  1. A.sebaceous glands
  2. B.fatty cells
  3. C.granular layer
  4. D.sweat glands.
Show the answer and explanation

Answer: A (sebaceous glands)

Explanation

Sebaceous glands open into the hair follicles and release oily sebum, which keeps hair and skin soft and waterproof.