Tidal Volume (TV)​ - The volume of air inspired or expired with each breath , Inspiratory Reserve Volume (IRV) - The additional volume of air that can be inhaled after a normal inhalation, Expiratory Reserve Volume (ERV) - The additional volume of air that can be exhaled forcefully after a normal exhalation. , Residual Volume (RV) - The volume of air that remains in the lungs after maximal exhalation. It is about 1.5-2.5 liters., Inspiratory Capacity (IC) - The maximum amount of air that can be inspired after a normal exhalation. It is the sum of tidal volume and inspiratory reserve volume., Functional Residual Capacity (FRC) - The volume of air remaining in the lungs after a normal exhalation. It is the sum of residual volume and expiratory reserve volume., Vital Capacity (VC) - The maximum amount of air that can be exhaled forcefully after a maximum inspiration. It is the sum of tidal volume, inspiratory reserve volume, and expiratory reserve volume., Total Lung Capacity (TLC)​ - The total volume of air that the lungs can hold. It is the sum of vital capacity and residual volume.,

The Respiratory system key terms

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