Question

Describe the response of human body to low external temperatures

Answer 1

hey,

when external temp is low,
just think what we often feel

yes, we start to shiver, a kind of exercise which produces heat and raises the body temperature.

you got it??

Answer 2

actually , a part of brain called hypothalamus controls our body temperature. when our body gets exposed to cold, we starts feeling cold and our body temperature decreases . then this decrease in body temperature is instantly detected by our hypothalamus. thus hypothalamus sends signals to our muscles to contract and relax rapidly ,making us shiver . this rapid contraction and relaxation of our muscles generate heat . this heat warms our body. I hope it helped