PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____, which is a waste gas (useless gas), exits the bloodstream and enters the lungs. This gas is then breathed out with the rest of the other gases.
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Oxygen
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Carbon Dioxide
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Carbon dioxide, a waste product of the body’s cells, is exhaled with oxygen taken in from the outside air by our lungs.
Detailed explanation-2: -Then the blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide.
Detailed explanation-3: -Exhalation and gas exchange The main reason for exhalation is to rid the body of carbon dioxide, which is the waste product of gas exchange in humans.
There is 1 question to complete.