Medical Dictionary
Main Entry:
arrector pi·li muscle Pronunciation:
-'pI-"lI-, -'pil-E- Function:
noun : one of the small fan-shaped smooth muscles associated with thebase of each hair that contract when the body surface is chilled and erect the hairs, compress an oil gland above each muscle, and produce the appearance of goose bumps called also
erector pilimuscle, pilomotor muscle
