thermoregualtion

Question 1

what happens when you’re too hot?

Answer 1

detected by thermoregulatory centre in brain
sweating = evaporates to heat away from body
vasodilation brings blood flow closer to surface of skin
hairs

Question 2

what happens when youre too cold?

Answer 2

detected by thermoregulstory centre
shiver = muscle contractions uses energy from respiration (exothermic so releases heat)
vasoconstriction reataims heat
hairs