Fig. 1From: Generalized estimation of the ventilatory distribution from the multiple-breath nitrogen washoutModel of the lung. The lung is composed of a common series dead space (hatched area) and a set of N alveolar parallel units. Each alveolar unit has its end-expiratory volume (v) and is ventilated by a fraction of the tidal volume (\(\gamma\)). Units communicate only through the dead spaceBack to article page