An evolutionary explanation of why we get goose bumps when cold is that ____.
A)our sympathetic nervous system is activated
B)we inherited the mechanism from our remote ancestors who had more hair
C)we have a preference for being warm
D)our children are often raised in cold environments

Question

​An evolutionary explanation of why we get goose bumps when cold is that ____.
A)our sympathetic nervous system is activated
B)we inherited the mechanism from our remote ancestors who had more hair​
C)we have a preference for being warm​
D)our children are often raised in cold environments​

Quizplus · Accepted Answer

The evolutionary explanation for why we get goose bumps when cold is that humans inherited the mechanism from our remote ancestors who had more hair. Goose bumps are caused by the contraction of tiny muscles at the base of each hair follicle, which would have made the hair stand upright, trapping more warm air next to the skin and providing better insulation. Since our ancestors had more hair than we do, the same mechanism still exists in our bodies, leading to goose bumps when we are cold.

​An Evolutionary Explanation of Why We Get Goose Bumps When

An Evolutionary Explanation of Why We Get Goose Bumps When