To calculate the Total Lung Capacity (TLC):
\[ TLC = RV + ERV + TV + IRV \]
Where:
Total Lung Capacity (TLC) refers to the maximum amount of air that the lungs can hold. It is the sum of the volume of air in the lungs after a maximum inhalation, which includes the residual volume (air that remains in the lungs after a maximum exhalation), the tidal volume (air that moves in and out of the lungs during normal breathing), and the inspiratory and expiratory reserve volumes (additional air that can be inhaled or exhaled beyond normal breathing). It is typically measured using a device called a spirometer.
Let's assume the following values:
Using the formula:
\[ TLC = 1.2 + 1.0 + 0.5 + 3.0 = 5.7 \text{ liters} \]
The Total Lung Capacity is 5.7 liters.