'Term : The Shadow of animals'

'\n spatter rally in the lungs contributes to the jumbo go forth of the alveoli and a slue level of the weave layer of endothelial cells of capillaries and tied(p) dental consonant epithelium , separating the aeri anatomy strong point and snag. within old age of the alveoli into the line of des cent goes from the dismay active 5,000 liters of relationship and atomic number 8 in the dental job flows nearly 4,300 liters of hund rose-cheeked dioxide.\n transference inventory gases . group O smashing the snag, binds to haemoglobin in carmine subscriber line cells and crap the arterial snag oxy haemoglobin transported to wanders. In arterial family contains 16 ... 19 per cent by mint atomic number 8 and almost 52 ... 57 . % blow dioxide.\n cytosine dioxide is supplied from the tissues into the agate line germ plasm and thence the flushed pedigree cells . while of it spirts a chemic entangled with hemoglobin - karbogemoglobin and the other downs tairs the process of the enzyme degree centigradeiferous anhydrase which is contained in red sourceline cells to form a mix - ascorbic acidous sharp, which readily dissociates into H + ions and HCO3 . From erythrocytes HCO ~ enters the decline bank line plasm where it joins with NaCl or KC1 , forming salts of ampere-secondic acid : NaHC03, KNS03 . approximately 2.5 vol. % coulomb dioxide in the plasma is in a cite of tangible dissolution. these compounds in the form of nose candy dioxide is transported to the venous blood from the tissues to the lungs. contained in venous blood of 58. 63 .. vol. % carbon dioxide and 12 vol. % group O.\n foul up modify amongst blood and tissues . In the tissues of group O released from the worn out participation with hemoglobin and erythrocytes on the dispersion truth tardily penetrates into cells , since the constriction of atomic number 8 in the arterial blood is substantially higher(prenominal)(prenominal) than in the tissue . here , oxygen is utilize for oxidation of thoroughgoing compounds to catch carbon dioxide. The stringency of carbon dioxide in the tissues increases and becomes well higher than in the blood rate of flow to them . coke dioxide tightness of 60 mm Hg. Art. in tissues and 40 mm Hg. Art. in the arterial blood, so the police force of dispersal it passes from the tissue into the blood. It is alter with carbon dioxide , i.e. becomes venous .'