Oxygen is transported in the blood by RBC. Oxygen is picked up in the lungs by haemoglobin which transports the oxygen to the cells that need it and when they release oxygen they pick up carbon dioxide. Carbon dioxide is then carried back to the lungs where most of it is exhaled. The whole process is mediated by chemical triggers in the body.
This binding of oxygen is a reversible reaction. When haemoglobin and oxygen bind together this is called oxyhaemoglobin. CO2 Diffuses from the tissues into the RBC, this combines with the water to form carbonic acid.
This is normally a slow reaction, but the RBC is greatly accelerated by an enzyme called carbonic hydrase.
CGP NOTES
This binding of oxygen is a reversible reaction. When haemoglobin and oxygen bind together this is called oxyhaemoglobin. CO2 Diffuses from the tissues into the RBC, this combines with the water to form carbonic acid.
This is normally a slow reaction, but the RBC is greatly accelerated by an enzyme called carbonic hydrase.
CGP NOTES
No comments:
Post a Comment