Unformatted text preview: on opposite walls of an alveolus or alveolar duct from cohering and causing the minute airway to collapse. • Alveolar macrophage cells (dust cells) wander among the other cells of the alveolar wall, removing debris and microorganisms. • A thin epithelial basement membrane forms the outer layer of the alveolar wall. • A dense network of capillaries surrounds each alveolus. The capillary walls consist of endothelial cells surrounded by a thin basement membrane. The basement membranes of the alveolus and the capillary are often so close that they fuse....
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- Spring '10
- squamous epithelial cells, Alveolar macrophage cells, alveolar wall. Oxygen