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Question

Tidal volume of air in a normal healthy man during inspiration is about ........... mL.

A
200400
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B
500700
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C
9001000
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D
10001250
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Solution

The correct option is B 500700
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.
Therefore, the correct answer is option B.

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