C02 is primarily transpoed in the aerial blood as:: (A) Dissolved C02, (B) Carbonic Acid, (C) Carbamino-hemoglobin, (D) Bicarbonate
Answer is D. Transpo of carbon dioxide in the form of bicarbonate ions accounts for approximately 70% of the carbon dioxide transpoed from the tissues to the lungs. Thus this is by far the most impoant of all methods of transpo. Ref: Textbook of Medical Physiology By Guyton, 10th Edition, Page 471