'''Gases in solution''' include oxygen and carbon dioxide. Oxygen is carried mainly by the red blood cells but a small amount is dissolved in the plasma. Carbon dioxide is carried by the plasma as carbonic acid and bicarbonate ions. | '''Gases in solution''' include oxygen and carbon dioxide. Oxygen is carried mainly by the red blood cells but a small amount is dissolved in the plasma. Carbon dioxide is carried by the plasma as carbonic acid and bicarbonate ions. |