Temperature Control in Animals

Read pages 336 - 341 in Fullick and answer the following questions.

1)    What are the three types of heat transfers ? 

2)    Name two ways the skin can increase heat loss from the body.

3)    Name a layer of the skin which provides thermal insulation.

4)    How do the blood capillaries change to increase heat loss?

5)    What happens in cells at the "low lethal temperature" and the "high critical temperature"?

6)    Name two ways of increasing body temperature which don't involve the skin.

7)    Why are premature babies at risk from the cold?

8)    How do elephants use their ears for temperature control?

9)    What is special about ducks feet (and polar bear skin too) which reduces heat loss?