During systemic circulation, carbon dioxide produced by actively respiring tissues diffuses into the blood to be transported to the lungs. Which option correctly identifies both the primary chemical form in which this carbon dioxide is carried in the bloodstream, and the blood component in which this primary form is predominantly transported?
Primary Chemical FormBlood ComponentACarbaminohaemoglobinRed blood cells (erythrocytes)BHydrogencarbonate ions (HCO3−)Red blood cells (erythrocytes)CHydrogencarbonate ions (HCO3−)Blood plasmaDDissolved carbon dioxide gas (CO2)Blood plasma \begin{array}{|c|c|c|} \hline & \textbf{Primary Chemical Form} & \textbf{Blood Component} \\ \hline \text{A} & \text{Carbaminohaemoglobin} & \text{Red blood cells (erythrocytes)} \\ \hline \text{B} & \text{Hydrogencarbonate ions } (\text{HCO}_3^-) & \text{Red blood cells (erythrocytes)} \\ \hline \text{C} & \text{Hydrogencarbonate ions } (\text{HCO}_3^-) & \text{Blood plasma} \\ \hline \text{D} & \text{Dissolved carbon dioxide gas } (\text{CO}_2) & \text{Blood plasma} \\ \hline \end{array} ABCDPrimary Chemical FormCarbaminohaemoglobinHydrogencarbonate ions (HCO3−)Hydrogencarbonate ions (HCO3−)Dissolved carbon dioxide gas (CO2)Blood ComponentRed blood cells (erythrocytes)Red blood cells (erythrocytes)Blood plasmaBlood plasmaPrimary Chemical Form: Carbaminohaemoglobin; Blood Component: Red blood cells (erythrocytes)
Primary Chemical Form: Hydrogencarbonate ions (HCO3−)(\text{HCO}_3^-)(HCO3−); Blood Component: Red blood cells (erythrocytes)
Primary Chemical Form: Hydrogencarbonate ions (HCO3−)(\text{HCO}_3^-)(HCO3−); Blood Component: Blood plasma
Primary Chemical Form: Dissolved carbon dioxide gas (CO2)(\text{CO}_2)(CO2); Blood Component: Blood plasma
