What is incorrect about gas exchange?
A. Alveolar air is rich in oxygen and poor in carbon dioxide
B. Gas exchange takes place by diffusion
C. Blood that reaches the capillaries surrounding the alveoli is rich in oxygen and poor in carbon dioxide
D. Oxygen diffuses from the alveoli into the red blood cells in the capillaries and carbon dioxide diffuses into the alveoli
Preview next quiz:
What happens when your diaphragm relaxes and moves upward?
A. Your lungs deflate and you breathe out.
B. Your lungs inflate and you breathe in.
C. Your alveoli transfer oxygen to your bloodstream.
D. Your bloodstream transfers carbon dioxide to your alveoli.
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