. Veterinary studies for agricultural students. Veterinary medicine. 52 VETERINARY STUDIES waste materials unless it is brought in contact with air. It is in the lungs that the red blood cells and serum load up with oxygen, and it is here that carbon dioxid gas (C02) and other volatile impurities are eliminated from the blood. The water, C02, and other volatile compounds in the blood capil- laries, and oxygen in the inspired air, are separated in the lungs by a thin animal membrane. Nature is constantly endeavoring there to equalize pressures and satisfy chemical affinities be- tween free gase
. Veterinary studies for agricultural students. Veterinary medicine. 52 VETERINARY STUDIES waste materials unless it is brought in contact with air. It is in the lungs that the red blood cells and serum load up with oxygen, and it is here that carbon dioxid gas (C02) and other volatile impurities are eliminated from the blood. The water, C02, and other volatile compounds in the blood capil- laries, and oxygen in the inspired air, are separated in the lungs by a thin animal membrane. Nature is constantly endeavoring there to equalize pressures and satisfy chemical affinities be- tween free gases on one side of this membrane and gases held by a liquid on the other side of this same membrane. WATER. OXYGEN HEAT CAfJBON -Dl- OX/DE LUNGS BLOOC GAS BODY T/SSUFS Pig. 28.—Respiration in Diagram. (M. H. B.) Aside from chemical combination, each gas moves either way according to the partial pressure of the gas on one side and the tension of the same gas in the liquid on the other side of this membrane. The tension of the oxygen in venous blood is much lower than oxygen pressure in lung air. The tension of C02 in the venous blood is much higher than its pressure in the lung air. These variations in pressures and tensions do not appear to account for all exchange. The living tissue cells appear to have a part and probably interfere with the perfect working of these forces and a portion of the C02 is carried as carbonate and bicarbonate of soda. The factors that vary the proportion of oxygen consumed and C02 excreted are: body weight, amount of body surface, also rate and depth of respiration. We have the lowest rate of respiratory change in the body during fasting and highest rate on a nitrogenous diet. The amount of oxygen absorbed and C02 developed increase. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1922
