Gas Exchange In Lungs Flashcards
(7 cards)
1
Q
Where does air enter the lungs from?
A
The trachea
2
Q
What’s an adaption of the trachea
A
It has rings of cartilage, that prevent it from collapsing during inhalation
3
Q
the lungs have millions of tiny air sacs called…
A
Alveoli
4
Q
What do the alveoli do?
A
They help with gas exchange in and out of the blood stream
5
Q
Adaption of alveoli
A
Hugh surface area (million of them)
Thin walls for diffusion
Good blood supply, so continued oxygen paths in the blood are quick
6
Q
A
7
Q
What does breathing do?
A
Increase the rate of diffusion
