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?

2700 mL

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1500 mL

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1700 mL

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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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Column I	Column II
A. Tidal volume	(i)2500-3000 mL of air
B. Inspiratory reserve volume	(ii) 1000 mL of air
C. Expiratory reserve volume	(iii) 500 mL of air
D. Residual volume	(iv) 3400-4800 mL of air
E. Vital capacity	(v) 1200 mL of air

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