arrectores pilorum

Bundles of smooth muscle fibres, attached to the deep part of the hair follicles, passing outward alongside the sebaceous glands to the papillary layer of the corium; they act to pull the hairs erect, causing "goose bumps" or "goose flesh" (cutis anserina).

Synonym: musculi arrectores pilorum, arrectores pilorum, erector muscles of hairs.

(05 Mar 2000)


Terms mentioned in text: bundles, smooth, muscle fibres, deep, part, hair follicles, alongside, sebaceous glands, papillary layer, corium, pull, hairs, erect, cutis anserina, musculi arrectores pilorum, arrectores pilorum, erector muscles of hairs
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