Medical Dictionary

arrector pili muscle

play play
noun arrector pi·li muscle \-ˈpī-ˌlī-, -ˈpil-ē-\

Medical Definition of arrector pili muscle

  1. :  one of the small fan-shaped smooth muscles associated with the base 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 pili muscle, pilomotor muscle

Seen and Heard

What made you want to look up arrector pili muscle? Please tell us where you read or heard it (including the quote, if possible).


quaintly unconventional or refined

Get Word of the Day daily email!