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Q.

The inspiratory capacity of a person is 3,400 mL and the inspiratory reserve volume is 3,000 mL. How much of air does he inhale in an hour if he breathes 16 times per minute?

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a

2,880 litres

b

3,264 litres

c

384 litres

d

24 litres

answer is C.

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Detailed Solution

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IRV = 3000 ml

IC = 3400 ml (IRV + TV)

TV= 400 ml (TV = IC - IRV)

Volume of air inhale in an hour with breathing rate 16 time per minute

= 400 x 16 x 60 = 384000 ml = 384 litres.

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