Type I alveolar cells
A) are phagocytic.
B) secrete a chemical known as surfactant.
C) allow rapid diffusion of gases through their thin membranes, secrete a chemical known as surfactant, and are phagocytic.
D) allow rapid diffusion of gases through their thin membranes.
E) None of the statements are true.
D) allow rapid diffusion of gases through their thin membranes.
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