. Kirkes' handbook of physiology . of mercury, and the air drivenon. B is then closed. On lowering L the :--. :.:.- - C, ind - ra umn is established in opening E and lowering if, a vacuum is similarlyestablished in F ; if G be now opened, the blood in / willenter ebullition, and the gases will pass off into F and C,and on raising if and then L, the stopcock B beingopened, the gas is driven through A, and is receivedinto the receiver over mercury. By repeating the ex-periment several times the whole of the gases of : i: -:-. : . .Li-. ?.:-? -~. L :: ./ . -\:r;.iv.
. Kirkes' handbook of physiology . of mercury, and the air drivenon. B is then closed. On lowering L the :--. :.:.- - C, ind - ra umn is established in opening E and lowering if, a vacuum is similarlyestablished in F ; if G be now opened, the blood in / willenter ebullition, and the gases will pass off into F and C,and on raising if and then L, the stopcock B beingopened, the gas is driven through A, and is receivedinto the receiver over mercury. By repeating the ex-periment several times the whole of the gases of : i: -:-. : . .Li-. ?.:-? -~. L :: ./ . -\:r;.iv. :. Pflugers analysis of the arterial blcn the dog gave the following volumes per cent: gen carbon dioxide , and nitrogen The analysis for the venous blood gives much lower oxygen and a higher carbon dioxide per cent. The average oxygen con:-/ : venous blood is ic to 12 per cent and the carbon dioxide 45 per cent. The blood in different veins of the body varies within wide limits as regards its gas I :::.—L-a-d-wi^s 100 cc. Arterial bloc100 cc. Venous blood. Oxygen. 12. CC . -- r. Di xide. 34 CC 45 c-c cc - - COMBINING POWER OF HEMOGLOBIN WITH OXYGEN *2G9 The large quantity of oxygen found in arterial and in venous blood is themore striking when the facts of absorption of gases by liquids are liquid such as water will, when exposed to a gas, take up the gas by absorp-tion according to definite physical laws. Under constant temperature theamount of gas absorbed, oxygen for example, varies directly as the pressureof the gas, or partial pressure if the gas is a mixture. The oxygen absorbedby water from pure air as compared with expired air is in direct proportionto the partial pressure of oxygen in the two airs, which is as 159 to 122. The amount of gas absorbed for a unit of fluid under standard tempera-ture and pressure (one atmosphere at o° C), called its absorption coefficient,is about the same for blood-plasma as
Size: 946px × 2642px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiology, bookyear1
