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What is biological reason behind
shivering ???
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Answers
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shivering is such an emergency activity of the muscle cells to produce extra heat .sometime when one feels too cold .
it is often accompanied by clattering of teeth .
what actually happens is that in the cold winter days when the outside temperature is for below our body temperature ....
we are constantly losing his to the outside air and more of it has to be continuously provided and produced to make up for the loss ...
so liver cells in particular produce much heat and the muscle cells also contribute to it .
this is known as Shivering .
and ya...
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Heya,
Here is your answer...
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Skeletal muscles contract rapidly and we shiver. These contractions need energy from respiration, and some of this is released as heat. Blood vessels, which lead to the skin capillaries, become narrower - they constrict – which allows less blood to flow through the skin and conserve the core body temperature. This is called vasoconstriction.
The hairs on the skin also help to control body temperature. The hairs lie flat when we are warm, and rise when we are cold.
If we are too cold nerve impulses are sent to the hair erector muscles which contract. This raises the skin hairs and traps a layer of insulating air next to the skin.
Skin hairs lie flat when we are hot and stand upright when we are cold
The control of body temperature is an example of a negative feedback mechanism. It regulates the amount of:
shivering (rapid muscle contractions release heat)
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