The Process of Gas Exchange Flashcards
Week 6
1
Q
What happens first during gas exchange?
A
The artery to the lungs brings deoxygenated blood to the capillaries.
2
Q
What happens when deoxygenated blood enters the capillaries?
A
Carbon dioxide diffuses from the high concentration in the blood to the lower concentration in the air in the alveolus.
3
Q
What makes the diffusion of gases easier during gas exchange?
A
- Alveolus wall is one cell thick
- Capillary wall is one cell thick
- Inside of alveolus is lined with a film of moisture
4
Q
What happens during the diffusion of carbon dioxide?
A
Carbon dioxide diffuses from the higher concentration in the blood to the lower concentration in the air in the alveolus.
5
Q
What happens after the diffusion of carbon and oxygen?
A
Oxygenated blood leaves the capillaries of the alveolus is taken to the heart in the veins from the lungs.
