

Thus, the lung volume at which the inward elastic recoil of the lungs is equal and opposite to the outward elastic recoil of the chest wall is sometimes referred to as the relaxation volume of the respiratory system. However, the respiratory muscles may have significant tone at the FRC, and in certain circumstances, the FRC may be greater than or even less than the lung volume of the totally relaxed respiratory system.


Predicts the effects of alterations in lung and chest wall mechanics, due to normal or pathologic processes, on the lung volumes.Defines the standard lung volumes and understands their measurement.
