Oxyhemoglobin Dissociation Curve
• Deoxyhemoglobin + O2 Oxyhemoglobin
• Direction of reaction depends on:
– PO2 of the blood
– Affinity between Hb and O2
• At the lung
– High PO2 = formation of oxyhemoglobin
• At the tissues
– Low PO2 = release of O2 to tissues