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Q What is the concentration of oxygen in expired air?

ID: #10038 Respiratory system 248 views
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#10038Q ID
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Respiratory systemTopic
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  • A 19% ✔ ✖
  • B 4% ✔ ✖
  • C 10% ✔ ✖
  • D 16% ✔ ✖
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Explanation

The concentration of oxygen in inspired air is 19.6% while the concentration of oxygen in expired air is 15.7%. Therefore, approximately 4% of the oxygen is transferred from air to the blood. Similarly, the concentration of carbon dioxide in inspired air is 0.04% and the concentration of carbon dioxide in expired air is 3.6%, so approximately 3.56% of the carbon dioxide is transferred from the blood to air.

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