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

Question

Quizplus · Accepted Answer

Type I alveolar cells are primarily involved in the gas exchange process due to their thin membranes, which facilitate the rapid diffusion of gases. Type II alveolar cells are responsible for secreting surfactant, and alveolar macrophages are the cells with phagocytic activity in the alveoli.

Type I Alveolar Cells