Arrector pili

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Medical Definition of Arrector pili

Arrector pili: A microscopic band of muscle tissue which connects a hair follicle to the dermis. When stimulated, the arrector pili will contract and cause the hair to become more perpendicular to the skin surface (stand on end).


Quick GuideRosacea, Acne, Shingles: Common Adult Skin Diseases

Rosacea, Acne, Shingles: Common Adult Skin Diseases

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Reviewed on 5/13/2016

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