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The amount of air breathed in and out during a normal respiration by human lungs is referred to as

Options

  1. AVital capacity
  2. BTidal volume
  3. CInspiratory volume
  4. DTotal lung capacity

Correct answer

B. Tidal volume

Step-by-step solution

Tidal volume is the volume of air inspired or expired during a normal respiration. It is approximately 500 mL for a healthy adult. Vital capacity is the maximum volume of air a person can breathe in after a forced expiration. Inspiratory reserve volume is the additional volume of air a person can inspire by a forcible inspiration. Total lung capacity is the total volume of air accommodated in the lungs at the end of a forced inspiration. Answer: Tidal volume

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