arrector

(redirected from Arrector pili muscle)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

arrector

 [ah-rek´tor] (pl. arrecto´res) (L.)
raising, or that which raises; an erector muscle.

e·rec·tor

(ē-rek'tŏr),
1. One who or that which raises or makes erect.
2. Denoting specifically certain muscles having such action.
Synonym(s): arrector
[Mod. L.]

arrector

/ar·rec·tor/ (ah-rek´tor) pl. arrecto´res   [L.] raising, or that which raises; an arrector muscle.

e·rec·tor

(ĕ-rek'tŏr)
1. One who or that which raises or makes erect.
2. Denoting specifically certain muscles having such action.
Synonym(s): arrector.
[Mod. L.]

erector

a muscle that holds up a part, such as the spinal muscles contraction of which assist in the maintenance of upright posture

arrector

pl. arrectores [L.] raising, or that which raises; an erector muscle.

arrector pili muscle
smooth muscle that extends from the papillary zone of the dermis to the base of a hair follicle. Involuntary contraction causes hair erection which, in some species, is most noticeable on the neck and along the back (see hackles).
References in periodicals archive ?
Each hair is attached to small muscles called arrector pili muscles.