Arrector pili muscle: evidence of proximal attachment variant in terminal follicles of the scalp

Arrector pili muscle: evidence of proximal attachment variant in terminal follicles of the scalp

Author Barcaui, C. B. Google Scholar
Pineiro-Maceira, J. Google Scholar
Alchorne, MMD Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Universidade Federal do Rio de Janeiro (UFRJ)
Abstract Background There is general agreement that the proximal attachment site of the arrector pill (AP) muscle, via elastic tendons, is the bulge region, where follicular stem cells are situated. A variant of this insertion, in which the AP muscle surrounds the follicle circumference, has been described in human facial vellus hair follicles.Objectives To investigate whether terminal hair follicles of the human scalp may also present this variant of proximal insertion of the AP muscle.Methods Histological and immunohistochemical methods were used.Results At the bulge level, bundles of the AP muscle were seen to encircle the entire hair follicle.Conclusions Terminal follicles of the human scalp may also present this variant of proximal insertion of the AP muscle.
Keywords arrector pili muscle
proximal insertion
Language English
Date 2002-04-01
Published in British Journal of Dermatology. Oxford: Blackwell Publishing Ltd, v. 146, n. 4, p. 657-658, 2002.
ISSN 0007-0963 (Sherpa/Romeo, impact factor)
Publisher Blackwell Publishing Ltd
Extent 657-658
Origin http://dx.doi.org/10.1046/j.1365-2133.2002.04541.x
Access rights Closed access
Type Article
Web of Science ID WOS:000176020300017
URI http://repositorio.unifesp.br/handle/11600/26823

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