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health advisory Hospital Doctor Yu 2007-11-8 19:09:43

Answers:

Self defense mechanism.

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you are cold and may shivers.

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it's some kind of reaction that triggers your hair to stand up.so that your body will catch some heat in the air ..your body is trying to warm itself wether it be from a breeze or just to regulate body temperature

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each goosebump is a hair root and when you get cold or excited the hair folical contracts making the skin rise.. therefore you have goosebumps.

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goose bumps

Main Entry: goose bumps

Function: noun plural

: a roughness of the skin produced by erection of its papillae especially from cold, fear, or a sudden feeling of excitement

Main Entry: pa路pil路la

Pronunciation: p&-'pi-l&

Function: noun

Inflected Form(s): plural pa路pil路lae /-'pi-(")lE, -"lI/

Etymology: Latin, nipple, from diminutive of papula pimple; akin to Lithuanian papas nipple

: a small projecting body part similar to a nipple in form: a : a vascular process of connective tissue extending into and nourishing the root of a hair, feather, or developing tooth -- see HAIR illustration b : any of the vascular protuberances of the dermal layer of the skin extending into the epidermal layer and often containing tactile corpuscles c : any of the small protuberances on the upper surface of the tongue often containing taste buds

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you get goose bumps when you're cold or are experiencing strong emotions like fear - for instance, you get goose bumps while watching a horror movie or when you've showered and stepped into a really cool (as in cold) place and stuff.