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BIOLOGY

JAMB 2004 - Question 21

Biology 2004 JAMB Past Questions - Question 21: The function of the part labelled III is to

Use the diagram to answer question that follows

The function of the part labelled III is to

A: contract to pull the hair erect

B: conduct nervous impulses

C: carry blood and nitrogenous waste

D: produce oil for the skin

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Correct Answer

Explanation

C - Capillary supplies bloodcontaining food and oxygen to the hair for it's growth. It also removesnitrogenous wastes away from the hair. sebaceous gland secretes oil for the skin, nerve fibre conduct nervous impulses while the erector muscle on contracting pull the hair erect during cold weather