首页 >  Blossary: Useless Human Body Parts  >  Term: erector pili
erector pili

It is a bundle of smooth muscle fibres which attach to several hair folicles that contract involuntarily during stresses such as cold, fear, etc. and produces ineffecitve goosebumps.

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Useless Human Body Parts

类别 Health

词汇总数: 13

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