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BIOLOGY

JAMB 2006 - Question 29

Biology 2006 JAMB Past Questions - Question 29: The part of the mammalian skin involved in temperature regulation is the

Choose the most appropriate option for the gap .

The part of the mammalian skin involved in temperature regulation is the

A: sweat gland

B: hair papilla

C: hair follicle

D: sebaceous gland

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Correct Answer

Explanation

ASweat -gland is a coiled tube which continues as sweat duct that openson the surface as sweat pore. It absorbs water containing mineral salts andlittle urea from the surrounding capillaries and excretes them as sweat throughthe pore. As the sweat evaporates, it cools the body. Sebaceous gland seoptesoil which keeps the hair. and the epidermis water-proof and supple. Hairfollicle is an extension of malpighian layer. It consists of cells which divideactively forming the hair.