Definitions for "Functional Residual Capacity"
Keywords:  frc, expiration, lung, tlc, residual
Portion of lung volume--the volume of gas that remains in the lungs following a normal exhalation.
The amount of air still left in the lungs after breathing out normally.
lung volume at the end of normal expiration. At FRC, the tendency of the lungs to collapse is exactly balanced by the tendency of the chest and wall to expand.
Keywords:  erv
ERV + RV