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<br>Carbon dioxide molecules are transported in the blood from body tissues to the lungs by one in every of three strategies: dissolution directly into the blood, [BloodVitals monitor](http://khuhub.khu.ac.kr/u/ernaclawson049) binding to hemoglobin, or carried as a bicarbonate ion. Several properties of carbon dioxide in the blood affect its transport. First, carbon dioxide is extra soluble in blood than oxygen. About 5 to 7 percent of all carbon dioxide is dissolved in the plasma. Second, carbon dioxide can bind to plasma proteins or can enter red blood cells and bind to hemoglobin. This form transports about 10 % of the carbon dioxide. When carbon dioxide binds to hemoglobin, a molecule called carbaminohemoglobin is formed. Binding of carbon dioxide to hemoglobin is reversible. Therefore, when it reaches the lungs, the carbon dioxide can freely dissociate from the hemoglobin and be expelled from the physique. Third, the majority of carbon dioxide molecules (85 %) are carried as a part of the bicarbonate buffer system. In this system, carbon dioxide diffuses into the pink blood cells.<br> |