Transport of gases and AVO2 Bohr shift
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
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| How carbon dioxide is transported? | 70% as Hydrogen ions in blood
23% combines with haemoglobin
7% dissolved in plasma (increases blood acidity)
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| How oxygen is transported? | 97% carried by red blood cells (haemoglobin)
3% dissolved in plasma
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| What are the two sites for gaseous exchange? | Air in alveoli of lungs and the blood
Tissues/muscles of body and surrounding blood capillaries
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| Where is myoglobin found? | In muscles it is used as a oxygen store and has a higher affinity than haemoglobin
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| What causes the Bohr shift? | Increase in carbon dioxide and lactic acid production
Increases acidity of blood
Increase in blood and muscle temperature
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| The Bohr shift causes the curve to move in which direction and why? | Curve moves to the right which allows more oxygen to be given up
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| What is the arterial venous oxygen difference (a-VO2 diff)? | The difference in the oxygen content of the artery and the veins. It represents the amount of oxygen extracted by the muscles
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Created by:
Tina Dean
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