The small muscles under the dermis that serve to help the hair follicles stand on end when the body is chilled are called:

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The small muscles under the dermis that serve to help the hair follicles stand on end when the body is chilled are called arrector pili muscles. Arrector pili muscles are small muscles under the skin that are attached to the end of hair follicles in humans. Contraction of these muscles causes the hair follicle to stand on end, creating goose bumps when the body is chilled.

The Small Muscles Under the Dermis That Serve to Help