PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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We breathe in carbon dioxide and breathe out oxygen
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The statement is wrong. The air we inhale has more of oxygen and less of carbon dioxide. The air we exhale has higher concentration of carbon dioxide and lesser concentration of oxygen. Was this answer helpful?
Detailed explanation-2: -When oxygen passes into the bloodstream, carbon dioxide leaves it. Carbon dioxide (CO2) is a waste product of cellular metabolism. You get rid of it when you breathe out (exhale).
Detailed explanation-3: -Human beings do exhale almost three billion tons of carbon dioxide annually, but the carbon we exhale is the same carbon that was “inhaled” from the atmosphere by the plants we consume.
There is 1 question to complete.