Цвета, различающие различные компоненты в круговом сечении. Diagram illustrating the exchange of carbon dioxide (CO? ) and bicarbonate (HCO?? ) in the blood. Red blood cells transport carbon dioxide, highlighted by carbonic anhydrase facilitating conversion between CO? and bicarbonate ions. The chloride-bicarbonate exchanger (Cl? HCO?? ) is depicted, facilitating ion movement across the membrane. Arrows indicate the reactions and flow of molecules. Molecular structures of CO? , water, and ions are shown, with vibrant colors distinguishing different components in a circular, cross-sectional view of a blood vessel.