arrector


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Related to arrector: hair follicle

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 ?
Goosebumps happen when the tiny muscles in each hair follicle, called arrector pili muscles, contract, says Dr.
A small muscle, the arrector pili, is attached to the wall of the follicle and to the lower layer of the epidermis.
Each tiny hair on your skin is attached to small muscles, called arrector pili muscles.