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Capillary
Bronchiole
Alveolar wall
Carbon
diende
Oxygenated
blood
Alveoli
Capillary Red blood cell
Based on the diagram and text above, answer the following questions using complete
sentences.
1. Where is the concentration of oxygen higher: in the alveoli or in the blood arriving
at the alveoli?
2. What happens to oxygen when it reaches the alveoli?
3. Why does oxygen move from the alveoli into the blood?
4. How does hemoglobin help with the process of oxygen diffusion?
5. Where is the concentration of carbon dioxide higher: in the blood arriving at the
alveoli or in the alveoli?
6. What happens to carbon dioxide when it reaches the alveoli?
7.Why does carbon dioxide move from the blood into the alveoli?
8. What causes the oxygen and carbon dioxide to move in and out of the alveoli?