I get better at explaining something with more study. After a while more
pieces of a subject fit together. This Blood lessons is difficult. I have lots
of notes then ( try ) to make lessons easier to learn, with good links. Oh Yes, and HTML ect . . . .

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CO₂ + H₂O < reverses > HCO₃^-  H⁺
Hb + H⁺ ---- > Hb-H
CO₂ exhaled
Hb-O₂

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at lungs
HCO₃^-    Hb-H
O₂ --- > Hb-O₂    H⁺
HCO₃^-    H⁺ --- >    H₂O   CO₂    out
Hb-O₂    in

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to cell < --- Hb-O₂
Hb-H --- > to lungs

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CO₂ + H₂O --- > carbonic acid or H₂CO₃
dissociates in RBC
H⁺ + HCO₃^- / bicarbonate < exits > RBC into plasma with Chloride shift.
Above < reverses > to Carbon Dioxide, again, to be exhaled at lungs. Simple, Ha Ha Ha

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Process reverses to CO2 at lungs again, SiMple. CO2 out then Oxygen in.

CO2 + H2O from cell metabolism
H2CO3
     V
     HCO3^- H⁺
     V
H2CO3
     V
H2O + CO2 breathed out lungs     

Back to Page 1

Do you see it all, yet ?
cell CO2 + H2O -----> H + HCO3 -----> CO2 + H2O lungs

cell O2 <----- Hb-O2 <------ O2 lungs

CO₂ + H₂O ↔ H₂CO₃ ↔ H⁺ + HCO₃⁻ "My study idea is to understand the simplest then learn the more complex.""