An increase in carbon dioxide in human blood shifts the oxyhaemoglobin dissociation curve to the right.
What is the explanation for this effect?
1 )
An increase in carbon dioxide concentration increases the ventilation rate.
2 )
Carbon dioxide is more soluble than oxygen and displaces it.
3 )
Diffusion of carbon dioxide between the alveoli and the blood is more rapid.
Increasing the ${H^ + }$ concentration decreases haemoglobin affinity for oxygen.
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