CO2
- Created by: Molly Webb
- Created on: 09-04-15 14:43
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- CO2 produced at respiring tissues
- Diffuses into plasma
- 5% remains as CO2 molecules dissolved in plasma
- Some diffuses into Erthyrocytes
- Erythrocytes contain Carbonic Anhydrase
- CO2
- + H2O
- H2CO3 aka. carbonic acid
- Hydrogen ions
- Dissociates into these 2 products
- The H+ ions then bind with the haemoglobin inside erythrocytes
- Haemoglobinic Acid
- This makes the Haemoglobin release the O2
- Haemoglobinic Acid
- Hydrogen carbonate ions
- These diffuse out erythrocyte and into blood plasma, then remain here in solution and are carried back to lungs.
- 85% of CO2 is carried like this
- These diffuse out erythrocyte and into blood plasma, then remain here in solution and are carried back to lungs.
- Hydrogen ions
- H2CO3 aka. carbonic acid
- Some CO2 escapes the carbonic anhydrase and bines directly with haemoglobin forming carbaminohaemoglobin
- + H2O
- Diffuses into plasma
- Carbonic Anhydrase
- Inside Erythrocyte
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