**8.** **Tidal volume (TV)** refers to the usual and normal amount of air volume difference between inspired and expired gases without any extra effort. Thus, the tidal volume can be calculated as below:

IC = TV + IRV

Inserting the values given, we get:

4.5 = TV + 3.75

Thus, TV = 4.5 - 3.75 OR 0.75 L OR **750 mL**

Given: IRV = 3.75 L IC = 4.5 L TLC =7.5 L ERV = 1.5 L 10 BPM VD = 150 mL

8. Calculate the tidal volume

9. Calculate the RV

10. Find FRC

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