Answer:
FRC is the smallest among the listed lung capacities.
Step-by-step explanation:
The Functional Residual Volume (FRC), Total Lung Capacity (TLC), Vital Capacity (VC), Inspiratory Capacity (IC) can be determined as,
1. FRC = ERV + RV
2. TLC = ERV+ RV + IRV + TV
3. VC = ERV + IRV + TV
4. IC = IRV + TV
where,
ERV - Expiratory Reserve Volume,
TV- Tidal Volume,
IRV - Inspiratory Reserve Volume,
RV - Residual Volume
Once the values are calculated based on the above mentioned formulas, it can be noted that, FRC is the smallest among the listed four.