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Acinar model predictions of total flow through an acinus plotted against % vertical height in a 30-cm upright lung. A linear increase in intrapleural pressure down the lung of 24.52 Pa (0.25 cmH2O)/cm lung height, a linear increase in (arterial and venous) blood pressure of 98.06 Pa (1 cmH2O)/cm lung height, and a constant pressure drop across the acinus of 784.48 Pa (8 cmH2O) are assumed.
