The gas exchange occurs in the body of the second of the lung tissue and the lung -> The gas exchange between the air sacs in the lungs and blood vessels. The oxygen from the lungs to diffuse alveolar capillaries surrounding the alveoli into the lungs and combines with hemoglobin airport. (Haemoglobin; Hb) on the surface of red blood cells become out Bill C hemoglobin (oxyhemoglobin; HbO2), which is bright red. Blood with oxy hemoglobin is sent flying into the heart and is pumped to tissues throughout the body tissues -> oxy hemoglobin, the oxygen dissolves airport and fetal globin. Oxygen diffusion into tissue cells, making the cells receive oxygen as oxygen to the tissues. Carbon dioxide occurs in cell will spread into the blood. Carbon dioxide is mainly reacts with water in red blood cells is carbonic acid (H2CO3), which breaks down the hydrogen carbonate ion (HCO3-) and hydrogen ions (H +) when the blood contains hydrogen carbonate ions lot. flow to the heart to be pumped to the pulmonary capillaries surrounding the alveoli. Hydrogen carbonate ions and hydrogen ions to form a carbonic acid then decomposes into carbon dioxide and water in red blood cells. As a result, the density of carbon dioxide in the higher capillary pulmonary alveoli. Therefore the diffusion of carbon dioxide from the capillaries into the lung alveoli.
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