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The carbon (iv) oxide which has been produced by the respiring muscle tissue is diffused into the bloodstream in the form of bicarbonates, a process facilitated by an enzyme called carbonic anhydrase. The carbon (iv) oxide is then carried to the lungs. In the lungs , the Carbon(iv) oxide levels is greater in the blood than in the alveolar air, so the Carbon (iv) oxide diffuses the other way, out of the blood and into the alveoli , from which its exhaled. In the blood, 90% CO2 reacts chemically with water to produce carbonic acid, and it is transported as a bicarbonate ion.
Eric22 answered the question on September 30, 2018 at 16:43
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