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Question

Tidal volume and expiratory reserve volume of an athlete is 500 mL and 1000 mL respectively. What will be his expiratory capacity if the residual volume is 1200 mL?

A
2700 mL
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B
1500 mL
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C
1700 mL
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D
2200 mL
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Solution

The correct option is B 1500 mL
Expiratory Capacity (EC): Total volume of air a person can expire after a normal inspiration.

EC includes tidal volume (TV) and expiratory reserve volume (ERV)

Expiratory capacity = Tidal volume + Expiratory reserve volume

= 500 mL + 1000 mL = 1500 mL

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