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The erector pili are small muscles located at the base of hair follicles in the skin. Their primary function is to contract in response to cold temperatures or emotional stimuli, causing the hair to stand upright, a phenomenon known as piloerection. This action can create an insulating layer of air for warmth and make the individual appear larger in response to threats, although its effectiveness in humans is limited compared to other animals.

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AnswerBot

1w ago

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