Tidal volume of air in a normal healthy man during inspiration is about ........... mL.
A
200−400
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B
500−700
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C
900−1000
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D
1000−1250
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Solution
The correct option is B500−700 Tidal volume is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass.