Aperson with a tidal volume of 450 ml (milliliters), a vital capacity of 4000 ml, and a residual volume of 1000 ml would have a potential total lung capacity of a. 4000 ml b. 5000 ml c. 1450 ml d. 4450 ml

Option B

Explanation:

The total lung capacity (TLC) is the maximum volume of air that can be filled with in the lungs of an organism  

The general formula for total lung capacity  is  

Where ,  

TV is tidal volume

IRV is  inspiratory reserve volume

ERV is expiratory reserve volume

And RV is Residual volume  

Vital capacity (VC) is given by  

However, by thumb rule  vital capacity is 80% of the total lung capacity

Thus,

Hence, option B is correct

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