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Q.

What is correct about ERV (Expiratory Reserve Volume)?

a. Its value is less than TV(Tidal volume)
b. Its value is almost equal to RV(Residual Volume)
c. ERV=EC-TV, where EC=Expiratory Capacity and TV is Tidal Volume

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a

a and c only

b

a and b only

c

a, b and c

d

b and c only

answer is D.

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Detailed Solution

Expiratory Reserve Volume (ERV) is the additional volume of air, a person can expire by a forcible expiration. This averages 1000 mL to 1100 mL.

It is more than tidal volume.

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