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A person 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

Answer :

Answer:

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  

[tex]TLC = TV + IRV + ERV + RV[/tex]

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  

[tex]VC = TV + IRV + ERV[/tex]

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

Thus, [tex]\frac{80}{100} * TLC = 4000\\TLC = 4000 * \frac{100}{80}\\TLC = 5000[/tex]

Hence, option B is correct

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