PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The biggest difference between inhaled gases and exhaled gases is..
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Percentages of nitrogen and oxygen
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Percentages of carbon dioxide and oxygen
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Both
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Neither
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Explanation:
Detailed explanation-1: -The amount of inhaled air contains 21% of oxygen and 0.04% of carbon dioxide, while the air we breathe out contains 16.4% of oxygen and 4.4% of carbon dioxide. This is because our cells use oxygen from the inhaled air to release energy and give out carbon dioxide as a byproduct.
Detailed explanation-2: -Exhaled air has more percentage of carbon dioxide than inhaled air.
Detailed explanation-3: -The air that we inhale contains around 21% oxygen. This oxygen is used by the body for respiration and therefore the exhaled has less percentage of oxygen (13.6% to 16%).
There is 1 question to complete.