INTEGUMENTERY SYSTEM
INTEGUMENTERY SYSTEM MISCELLENOUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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“Goosebumps” are caused by contractions of the
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neurons
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arrector pili muscle
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sweat glands
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blood vessels
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Explanation:
Detailed explanation-1: -Goosebumps occur when tiny muscles in our skin’s hair follicles, called arrector pili muscles, pull hair upright. For animals with thick fur, this response helps keep them warm.
Detailed explanation-2: -The arrector pili muscle is a smooth muscle that attaches to the hair follicle, on one side, and the dermis, on the other. Contraction of the arrector pili muscle causes the hair follicle to stand on end, creating goose bumps.
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