| arrector pili |
Arrectores pilorum (singular Arrector pili) are tiny muscle fibers attached to each hair follicle, which contract to make the hairs stand on end. They are smooth muscle, not skeletal muscle, which explains why you can't voluntarily give yourself goose bumps. In other animals with more hair than humans, they serve an important function they raise the hairs so air gets trapped between them, providing a layer of insulation to keep the animal warm. ...
Ãâó: en.wikipedia.org/wiki/Arrector_pili
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| arrector pili |
A muscle running from a hair follicle to the dermis. Contraction of the muscle causes the hair to rise perpendicular to the skin surface, forming "goose pimples."
Ãâó: www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBook...
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| arrector pili |
a tiny muscle attached to the base of the hair follicle. When this involuntary muscle flexes, it causes the hairs to stand up and causes "goosebumps."
Ãâó: www.hairfacts.com/terms/termsa.html
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| arrector pili |
(ah-rek'tor pi'li ) tiny, smooth muscles attached to hair follicles, which cause the hair to stand upright when activated.
Ãâó: paramedicine.wikispaces.org/Medical+Terminology
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| arrector |
pl. arrecto´res [L.] raising, or that which raises.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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