Gas Exchange In alveoli/capillaries Flashcards
1
Q
Why do we have lots of alveoli
A
To increase the surface area of the gas exchange surface in the lungs
2
Q
Alveoli adaptations
A
One cell thick
Rich blood supply
3
Q
Why do capillaries and alveoli have a one cell thick wall
A
One cell thick wall to increase rate of diffusion of oxygen from the alveoli into the capillaries and carbon dioxide out of the capillaries into the alveolus
