Paper 2: Alveoli Flashcards
1
Q
What is the alveoli adapted for?
A
Gas exchange by diffusion
2
Q
What happens to oxygen in the lungs?
A
Diffuses from air into the blood
3
Q
What happens to carbon dioxide in the lungs?
A
Diffused from the blood into the air
4
Q
What are million of tiny alveoli’s adapted to do?
A
Create a large surface area for diffusion of gases
5
Q
What is each alveolus closely associated with ?
A
A capillary
