Question

When the body is cold, an interaction of systems allows the body to warm itself. Which of these help the body warm itself when it is cold? Check all that apply.

shivering
sweating
hair on body lying flat
goosebumps forming
hair on body standing up

Answer 1

Correct choices:
- shivering — yes (rapid muscle contractions produce heat)
- goosebumps forming — yes (piloerection traps a layer of air for insulation)
- hair on body standing up — yes (same piloerection effect)

Not helpful:
- sweating — no (evaporation cools the body)
- hair on body lying flat — no (reduces trapped insulation)