Exchanging Substances Flashcards
1
Q
Where does gas exchange happen?
A
In the lungs
2
Q
What do lungs contain?
A
Air sacs called Avioli
3
Q
What are features of Avioli
A
An enormous surface area
A moist lining
Very thin walls
A good blood supply
4
Q
What is inside the small intestine?
A
Villi
5
Q
Why do the villi contain a large surface area?
A
So that digested food is absorbed much quicker into the blood
6
Q
What does the stomata do?
A
Controls what goes in and out of the leaf
