Assertion (A): About 70% of CO2 that enters RBCs changes into HCO3- for transport in plasma to the lungs where it reconverts into CO2 for elimination. Reason (R): About 40% of CO2 that enters RBCs changes into carbaminohaemoglobin which releases O2 in the lungs.

Question

Assertion-ReasonTransport of Oxygen and Carbon Dioxide in Blood

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What are the major transport mechanisms for CO2? Explain.

What is the effect of pCO2 on oxygen transport?

Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?