If a person exhales out forcefully by applying all his efforts, what will be the pulmonary volume inhaled by him immediately under the normal condition without applying any extra effort?

TV + IRV

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Only TV

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TV+ERV

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TV + IRV + ERV

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Solution

The correct option is B TV + IRV + ERV
Vital capacity is considered as the maximum amount of air which a person can breathe after forceful expiration. this includes TV, ERV, and IRV or the maximum amount of volume of air a person can breathe out after a forceful inspiration.
So the correct option is 'TV + IRV + ERV'

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What is the total volume (approximately) of air that can be forcefully exhaled after a normal inspiration?

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