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Q What is the term for the air that remains in the lungs after a forceful expiration?

ID: #10026 Respiratory system 120 views
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#10026Q ID
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Respiratory systemTopic
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  • A Inspiratory air ✔ ✖
  • B Residual air ✔ ✖
  • C Dead space air ✔ ✖
  • D Tidal air ✔ ✖
Correct Answer: Option B

Explanation

Residual air is the volume of air that remains in the lungs even after a forceful expiration. This air cannot be expelled from the lungs and helps to maintain the open structure of the alveoli. The average volume of residual air in an adult man is approximately 1200 ml. Dead space air, on the other hand, refers to the air that remains in the conducting airways and does not participate in gas exchange. Inspiratory air is the volume of air that is taken in during a normal inspiration, while tidal air refers to the volume of air that moves in and out of the lungs during normal breathing.

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