The major form

[BodybldgDoc]

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of CO2 in the blood is carbonic acid which is roughly 60-80% if my memory serves me correct. what are the other forms of CO2?

 

[golfmontpoker]

I know carbonic acid and bicarbonate are present in the blood and act as a buffer system that regulate the PH... Don't know if thats what you are looking for.

 

[DailyDrivenTJ]

CO2...

7% is transported via blood plasma
23% binds to amino acid
70% forms bicarbonate

 

[BodybldgDoc]

CO2...

7% is transported via blood plasma
23% binds to amino acid
70% forms bicarbonate

this is exactly what I was looking for. thank you.
Btw can you confirm this for me. Is carbonic acid broken down into H+ and bicarbonate ions by carbonic anhydrase?

 

[DailyDrivenTJ]

No, Carbonic anhydrase helps converting CO2 and H2O into Carbonic acid which later can dissociate into bicarbonate and H+.

 

[Lonely Sol]

No, Carbonic anhydrase helps converting CO2 and H2O into Carbonic acid which later can dissociate into bicarbonate and H+.

Correct!
Also, remember, HPO4- also acts as a buffer system.

 

[jdmsamurai]

CO2...

7% is transported via blood plasma
23% binds to amino acid
70% forms bicarbonate

7% transported blood plasma
23% transported through hemoglobin (yes, they can carry CO2 too)
70% bicarbonate