Question

Endothermic mammals will use muscles attacked to their hair follicles to "fluff up" their fur coats when it is cold because ___________________________.

a)triggering the muscles that erect the hairs uses many ATP, which generates significant heat.

b)larger fur coats allow mammals to capture significantly more radiant heat from the sun. c)the air trapped in between the hairs acts as a layer of insulation d) all of these are correct

Answer 1

c). the air trapped in between the hairs acts as a layer of insulation

The main purpose of the erection by the erector pili during cold temperatures is to increase the insulation by the air trapped in between the hairs.