How is the Functional Residual Capacity (FRC) measured?
1
Expiratory Reserve Volume (ERV) + Residual Volume (RV)
2
Expiratory Reserve Volume (ERV) + Inspiratory Reserve Volume (IRV) + Tidal Volume (VT)
3
Inspiratory Reserve Volume (IRV) + Residual Volume (RV)
4
Inspiratory Reserve Volume (IRV) + Tidal Volume (VT)