In a healthy adult, if the Tidal Volume ($V_T$) is 500 mL, the Inspiratory Reserve Volume (IRV) is 3000 mL, and the Expiratory Reserve Volume (ERV) is 1100 mL, what is the Vital Capacity (VC)?
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Correct answer: 4600 mL
Vital Capacity is the sum of the three volumes that can be voluntarily exchanged: $VC = IRV + V_T + ERV$. In this case, $3000 + 500 + 1100 = 4600$ mL.
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