Multiple Choice
Oxygen and carbon dioxide crossing between blood and air in the lungs must pass through cells of the following types:
A) type I pneumocyte only
B) type I pneumocyte and endothelial cells
C) type I pneumocyte and type II pneumocyte
D) type II pneumocyte only
E) Clara cells and endothelial cells
Correct Answer:

Verified
Correct Answer:
Verified
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