Haemoglobin has high affinity for oxygen. It binds oxygen at the level of lung alveoli to form oxyhaemoglobin and releases oxygen at the level of body tissues due to low ${{pO}_{2}}$ Each haemoglobin molecule can hind to four molecules of oxygen.
Haemoglobin has high affinity for oxygen. It binds oxygen at the level of lung alveoli to form oxyhaemoglobin and releases oxygen at the level of body tissues due to low ${{pO}_{2}}$ Each haemoglobin molecule can hind to four molecules of oxygen.