Adaptions To Cold Environments Flashcards
0
Q
What is a counter-current heat exchange system?
A
Penguins stand on cold ice.
Blood vessels to and from feet are close to each other allowing heat transfer between them.
Warm blood in arteries going to feet heats returning cold blood in veins
Feet stay cold but blood warmed before making body cold
1
Q
What are anatomical adaptions to cold environments?
A
Thick coat, blubber to insulate
Large size or compact body shape to reduce heat loss through skin (small surface area to volume ratio)
2
Q
Examples of behavioural adaptions to cold
A
Migrate to warmer climate
Hibernate - save energy, doesn’t have to find food or keep warm
Penguins huddle to keep warm
