The hair : its growth, care, diseases, and treatment / by C. Henri Leonard.

  • Leonard, C. Henri (Charles Henri), 1850-1925
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: The hair : its growth, care, diseases, and treatment / by C. Henri Leonard. Source: Wellcome Collection.

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    the follicle. These are called erectores pili, the erector mus- cles of the hair. By the contraction of these muscles the hair is elevated, with its follicle, and protruded from the skin, giv- ing the condition of affairs known as goose pimples or goose skin (cutis anserina.) Through the same physiologi- cal action upon the hairs and follicles of the scalp, one's hair is made to stand on end, as is popularly said. During the contraction of these muscles the contents of the follicle and the sebaceous glands are also squeezed out more abundantly than when the follicle is in its usual distended, or quiescent, state. It is these muscles that also give the tactile movements to the whiskers of the feline, canine and leonine species, only they are more developed in them than in man.
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