homeostasis

Question 1

homeostasis

Answer 1

maintaining a constant internal environment

Question 2

what is homeostasis controlled by?

Answer 2

hypothalmus

Question 3

endotherms

Answer 3

generate their own heat through metabolic reactions maintain a constant body temp independent outside their enviroment e.g human

Question 4

exotherms

Answer 4

gain or lose heat to environment, body temp changes with environmental temp e.g frog

Question 5

what happens to the skin in hot conditions?

Answer 5

vasodilation
sweating

Question 6

vasodilation

Answer 6

blood vessels in the skin dilate and move to the surface of the skin. losing heat

Question 7

sweating

Answer 7

water on the surface of the skin evaporates taking heat with it - cools us down

Question 8

what happens to the skin in cold conditions

Answer 8

vasoconstriction and piberection

Question 9

vasoconstriction

Answer 9

blood vessels constrict and move from the surface of skin, reducing heat loss

Question 10

piberection

Answer 10

erector muscles hair stands up, trapping a layer of air ( air is an insulator)