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CD-ROM Today (UK) (Spanish) 15
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01272.txt
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1994-01-17
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$Unique_ID{BRK01272}
$Pretitle{}
$Title{What Causes "Goose Bumps"?}
$Subject{skin goose bumps cause arrectoris pili hair follicle muscle stand
erect frightened aroused adrenaline goosebumps gooseflesh bump goosebump}
$Volume{L-20}
$Log{
Anatomy of the Skin*0006701.scf}
Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
What Causes "Goose Bumps"?
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QUESTION: Whenever there is a bit of an extra chill in the air, and whenever
I am startled or emotional, my skin breaks out in a crop of "goose bumps". I
know it is not harmful, but I can't help wondering what it means. Can you
please tell me just what causes these peculiar bumps?
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ANSWER: It's all part of some left over reactions we inherited from our
primitive ancestors. Thinking about some of our pets, whose hair stands on
end when they are frightened, will help you understand your own situation.
Each of our hairs are supplied with a tiny muscle. Its called the "arrectoris
pili" muscle (and means it causes the hair to stand erect). In some areas of
our skin the muscle, which is part of the hair follicle, is still present
although the skin is hairless. When we are frightened or aroused, in fact
anything that stimulates the production of adrenaline in our system, these
muscles contract. If there is hair present, it "stands up". In hairless
skin, it produces "goosebumps", or "gooseflesh" if you will. It's an
interesting reaction, but can give your thoughts away if you become emotional
over someone who is a careful observer.
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The material contained here is "FOR INFORMATION ONLY" and should not replace
the counsel and advice of your personal physician. Promptly consulting your
doctor is the best path to a quick and successful resolution of any medical
problem.