Did you know? The sensation of cold has been associated in several animals with the activation of the sympathetic nervous system causing the contraction of the arrector pili muscles. The piloerection…

Adrienne Farricelli

Did you know? The sensation of cold has been associated in several animals with the activation of the sympathetic nervous system causing the contraction of the arrector pili muscles. The piloerection in this case is meant to trap air and create a layer of insulation.

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