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What Causes “Goose Bumps”?

27.03.2008 от M.V

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?

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.

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.

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