PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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inspiratory capacity
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functional residual capacity
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vital capacity
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total lung capacity
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Detailed explanation-1: -It is the total amount of air exhaled after maximal inhalation. The value is about 4800mL and it varies according to age and body size. It is calculated by summing tidal volume, inspiratory reserve volume, and expiratory reserve volume.
Detailed explanation-2: -The vital capacity (VC) measures the maximum amount of air that can be inhaled or exhaled during a respiratory cycle. It is the sum of the expiratory reserve volume, tidal volume, and inspiratory reserve volume.
Detailed explanation-3: -FVC (forced vital capacity) – the maximal volume of air that a subject can expel in one maximal expiration from a point of maximal inspiration.
Detailed explanation-4: -The total volume of air accommodated in the lungs at the end of forced inspiration is known as Total Capacity(TLC).