| vortices pilorum | A spiral arrangement of the hairs, as at the crown of the head. Synonym: vortices pilorum. (05 Mar 2000) |
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| vortices | Plural of vortex. (05 Mar 2000) |
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| 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) |
| atrophia pilorum propria | A general term that includes fragilitas crinium, trichorrhexis nodosa, monilethrix, and atrophy of the hair. (05 Mar 2000) |
| musculi 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) |
| cruces pilorum | Crosslike figures formed by hairs growing from two directions that meet and then separate in a direction perpendicular to the original orientation. Synonym: hair crosses. (05 Mar 2000) |
| scissura pilorum | A splitting of the hairs at their ends. Synonym: scissura pilorum. Origin: schizo-+ G. Thrix, hair (05 Mar 2000) |
| flumina pilorum | The curved lines along which the hairs are arranged on the head and various parts of the body, especially noticeable in the foetus. Synonym: flumina pilorum. (05 Mar 2000) |