Role of haemoglobin

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The role of haemoglobin

The role of haemoglobin is to transport oxygen. To be efficent it must:

- associate with oxygen at the surface where gas exchange takes place

- dissociate from oxygen at those tissues that require it

Achieved by a property of haemoglobin; changes its affinity for oxygen under different conditions. Its shape changes in presence of substances eg. carbon dioxide

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