Video 5

Movie S5. Vector diagram of simulation of bulk flow patterns in the lung. Medial, parasagittal view of the right lung showing bulk patterns of flow over two respiratory cycles with periods of approximately 4 s. Inspiration occurs when the colored cone in the trachea moves caudad and expiration when it moves craniad (left side of page). Speed is in meters per second with warm colors indicating more rapid flow. Unidirectional flow occurs in both the cranial and caudal chambers.