The vital capacity of lungs is ___________.

4-5 L

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3.5-4.5 L

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5-6 L

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4-7 L

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Solution

The correct option is A 4-5 L
Vital capacity is the maximum volume of air a person can breathe in after a forced expiration. This includes ERV, TV and IRV or the maximum volume of air a person can breathe out after a forced expiration. Vital capacity can be calculated by subtracting Reserve volume from Total Lung Capacity.
VC =IRV+TV+ERV = 4 to 5 L
Hence, the correct answer is '4 - 5L'

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Similar questions

Distinguish between:

(a) IRV and ERV

(b) Inspiratory capacity and Expiratory capacity

A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is

(a) total lung capacity

(b) tidal volume

(d) inspiratory capacity

Differentiate between

(a) Inspiratory and expiratory reserve volume

(b) Vital capacity and total lung capacity.

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