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Question

What is the effect of pCO2 on oxygen transport?

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Solution

pCO2 plays an important role in the transportation of oxygen. Oxygen is transported in the blood as oxyhaemoglobin and oxygen dissociate from it at the tissues. At the alveolus, the low pCO2 and high pO2 favours the formation of oxyhaemoglobin. At the tissues, the high pCO2 and low pO2 favours the dissociation of oxygen from oxyhaemoglobin. Hence, the affinity of haemoglobin for oxygen is enhanced by the decrease of pCO2 in blood.


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