The lungs Flashcards
(10 cards)
1
Q
What does Aveoli do?
A
Carries out Gas exchange around the body by diffusion
2
Q
Why are Aveoli walls thin?
A
So diffusion can occur quickly
3
Q
Why do Aveoli have moist walls?
A
gases diffuse better in liquids
4
Q
How does oxygen move in aveoli?
A
Aveoli into the blood (high to low)
5
Q
How does co2 move in aveoli?
A
Blood stream High to low concentration
6
Q
What is the Aveoli surrounded by?
A
Capillaries
7
Q
Why does Aveoli have a large surface are?
A
So that diffusion can occur quickly
8
Q
Why do Aveoli have a good blood supply?
A
So oxygen is quickly supplied to the body
9
Q
How are Aveoli specialised
A
Big surface area, moist lining, very thin walls, a good blood supply
10
Q
Where is the bronchi/bronchioles
A
End at alveoli
