... a simplified in-vitro alveolar model consisting of a single alveolus located on a bronchiole. The model comprises a transparent elastic 5/6 spherical cap (representing the alveolus) mounted over a circular hole on the side of a rigid circular tube (representing the bronchiole). The alveolus is capable...

...Sudhaker Chhabra; Ajay K. Prasad The acinar region of the human lung comprises about 300 × 10 6 alveoli, which are responsible for gas exchange between the lung and the blood. As discussed in Part I ( Chhabra and Prasad, “Flow and Particle Dispersion in a Pulmonary Alveolus—Part I: Velocity...

... period of time (usually ten seconds) and then exhaled. During this single-breath process, CO diffuses from the gas region of the alveolus to the RBC’s. The process is unsteady because the potential gradient (i.e., the CO concentration within the gas region) driving the diffusion varies (decays) in time...