how are goose bumps formed


Goose bumps - Wikipedia, the free encyclopedia

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** Goose bumps **

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Goose bumps
2003-09-17 Goose bumps.jpgGoose bumps on a human arm
Specialty Dermatology
DiseasesDB 24683

*Goose bumps*, *goose pimples* or *goose flesh*, the medical term /*cutis
anserina*/ or *horripilation*, are the bumps on a person's skin at the base
of body hairs which may involuntarily develop when a person is cold or
experiences strong emotions such as fear, nostalgia, pleasure, euphoria,
awe, admiration, and sexual arousal.^[1]

The formation of goose bumps in humans under stress is considered by some
to be a vestigial reflex;^[2] some believe its function in human ancestors
was to raise the body's hair, making the ancestor appear larger and scaring
off predators. The reflex of producing goose bumps is known as *arasing*,
*piloerection*, or the *pilomotor reflex*. It occurs in many mammals
besides humans; a prominent example is porcupines, which raise their quills
when threatened, or sea otters when they encounter sharks or other
predators.

*Contents*

· 1 Etymology
· 2 Anatomy and biology
· 3 Cause

· 3.1 Extreme temperatures
· 3.2 Intense emotion

· 4 See also
· 5 References

*Etymology[edit]*

Moderate goose bumps

The phrase "goose bumps" derives from the phenomenon's association with
goose skin. Goose feathers grow from stores in the epidermis which resemble
human hair follicles. When a goose's feathers are plucked, its skin has
protrusions where the feathers were, and these bumps are what the human
phenomenon resembles.

It is not clear why the particular fowl, goose, was chosen in English, as


Source: en.wikipedia.org/wiki/Goose_bumps

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