Question

Gradient is present for Co2 in the opposite direction i.e, from tissue to blood and blood to alveoli.As the solubility of Co2 is 20-25 times higher than that of O2 the amount of Co2 that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher compared to that of O2. Explain this with neatly

Answer 1

at tissue site partial pressure of CO2 is high due to catabolism, CO2 diffuses into blood ( RBC & Plasma) and forms HCO3- & H+