Multiple choice

What is the vital capacity of lungs of an average human?

  1. 3000 - 4500 ml

  2. 4200 - 5500 ml

  3. 1500 - 1800 ml

  4. 500 - 1000 ml
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vital capacity is the maximum volume of air a person can expel from lungs after maximal inhalation (VC = TV + IRV + ERV). For an average adult human, this ranges from 3000-4500 ml. Option B's lower bound is too high, while options C and D represent tidal volume and residual volume respectively, which are much smaller. Option A has a typo character but the range is correct.

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