PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is it called when oxygen combines with haemoglobin?
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Oxyhaemoglobin
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Oxygenated Haemoglobin
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Oxygenglobin
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Haemoglobin with O2
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Explanation:
Detailed explanation-1: -Oxygenation literally means the addition of oxygen to a chemical substance or physical system. Thus binding of oxygen with haemoglobin can also be reffered as oxygenation. Oxyhemoglobin is formed when oxygen binds to the heme component of the protein hemoglobin in red blood cells, during physiological respiration.
Detailed explanation-2: -Methemoglobin, formed by oxidation of circulating hemoglobin, is incapable of binding and transporting oxygen as compared to reduced hemoglobin. Small amounts of methemoglobin are formed by auto-oxidation even under normal circumstances.
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