when we feel cold, why do our hairs stand up?
Asked by | 20th Dec, 2008, 06:53: AM
When we feel cold, goosebumps are caused by a contraction of miniature muscles that are attached to each hair. Each contracting muscle creates a shallow depression on the skin surface, which causes the surrounding area to protrude. The contraction also causes the hair to stand up whenever the body feels cold.
Answered by | 20th Dec, 2008, 11:08: AM
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