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arrector pili

   Also found in: Wikipedia 0.01 sec.
arrector pili
pl. arrectores pilorum [ä·rek′tor pī′lī]
Etymology: L, raisers of the hair
minute smooth muscles of the skin, attached to the connective tissue sheath of the hair follicles; when they contract they cause the hair to stand erect, producing the appearance called goose flesh.


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