Goosebumps

Hello there again!
I'm back with another mind-blowing article, goosebumps. When you are cold, frightened and sometimes excited, you must have noticed a uniformed series of rash or bump-like reflexes on your skin. It doesn't hurt you and you might not feel it until you see it. Those little bumpy friends are called *goosebumps*
They always appear on the skin making the skin look like that of a plucked goose. That is where the name 'goosebumps' was gotten from.
You know, originally, it wasn't called goosebumps. In the early 1800s, it was referred ro as "goose -flesh". It was also referred to as "goose's skin", "goose-skin" and "hen-flesh" in 1744,1761 and 15th century respectively. The name 'goosebumps' which is also known as "PILOMOTOR REFLEX" in medical terms, was coined in 1859.
Why Do We Get Goosebumps?
Goosebumps, to our animal ancestors from which we inherited it, was a useful Physiological phenomenon. These tiny elevations appear when hair-attached muscles (usually abysmal) contracts, creating a shallow,depression on the surface of the skin. This causes a shallow depression on the area to bulge out or stick out in an array of reflexes, and the hair to rise whenever the body experiences cold. The simple mechanism is to retain heat but this is somewhat useless in humans as we don't have a hair coat.
Many animals have thick hair coat so when their hair rises, the layer of hair expands. Therefore, more heat is retained depending on the thickness of the hair layer.
The nervous system makes goosebumps possible. A division of the nervous system -autonomic system(further divided into sympathetic and parasympathetic system), is responsible,for the array of bumps. Goose bumps are involuntary actions(contrary to this, a few people can make it voluntary I.e, they can create Goosebumps at their own will).
Stay tuned for more...