The reason the hair stands up when we are cold or frightened is that tiny muscles under or in the skin called arrector pili muscles contract and make the hair follicles stand up. In hairier animals, this raises the layer of insulation to warm them up or to cushion them in a fight. They are called goose bumps because they give the skin a texture like the skin of a freshly plucked goose or other bird.
The reason the hair stands up when we are cold or frightened is that tiny muscles under or in the skin called arrector pili muscles contract and make the hair follicles stand up. In hairier animals, this raises the layer of insulation to warm them up or to cushion them in a fight. They are called goose bumps because they give the skin a texture like the skin of a freshly plucked goose or other bird.
Oh! If I just had noticed this topic before...
I know that when hair stands up it leaves some gaps in the skin so that we can gain more heat.
But we get goose bumps not only if cold, but also when hearing some sounds (like a fork making this horrible sound when scratching the plate, or when we listen to some extremely pleasant music), and also by other factors... Why is that? Do all these somehow create the sense of being cold? How?
Oh! If I just had noticed this topic before...
I know that when hair stands up it leaves some gaps in the skin so that we can gain more heat.
But we get goose bumps not only if cold, but also when hearing some sounds (like a fork making this horrible sound when scratching the plate, or when we listen to some extremely pleasant music), and also by other factors... Why is that? Do all these somehow create the sense of being cold? How?
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The reason the hair stands up when we are cold or frightened is that tiny muscles under or in the skin called arrector pili muscles contract and make the hair follicles stand up. In hairier animals, this raises the layer of insulation to warm them up or to cushion them in a fight. They are called goose bumps because they give the skin a texture like the skin of a freshly plucked goose or other bird.
Oh! If I just had noticed this topic before...
I know that when hair stands up it leaves some gaps in the skin so that we can gain more heat.
But we get goose bumps not only if cold, but also when hearing some sounds (like a fork making this horrible sound when scratching the plate, or when we listen to some extremely pleasant music), and also by other factors... Why is that? Do all these somehow create the sense of being cold? How?
Useful info. Hope to see more good posts in the future.