Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 10 HITCHCOCK'S ANATOMY ant of them seem desir- able. 21. Oxygen.—Oxy- gen is regarded as an immediate principle only when it exists in a free state, as it does in the blood, which, in an adult, contains sixty- one grains: nine and a half cubic inches be- ing found in the arte- rial, and fourteen and a half in the venous blood. An adult consumes in a year about eight hundred pounds of oxygen. An inhabitant of a mountainous region 18,000 feet above the sea (in Potosi) consumes, howev
Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 10 HITCHCOCK'S ANATOMY ant of them seem desir- able. 21. Oxygen.—Oxy- gen is regarded as an immediate principle only when it exists in a free state, as it does in the blood, which, in an adult, contains sixty- one grains: nine and a half cubic inches be- ing found in the arte- rial, and fourteen and a half in the venous blood. An adult consumes in a year about eight hundred pounds of oxygen. An inhabitant of a mountainous region 18,000 feet above the sea (in Potosi) consumes, however, only two thirds as much as one upon the sea-shore. 22. Hydrogen and Nitrogen.—Hydrogen is found in a free state in the stomach and some parts of the intestines, and nitrogen in the lungs, blood, and intestines. 23. Carbonic Acid,—Carbonic acid is found in the lungs, the alimentary canal, the blood, and urine. 24. Water; Cubical Size of the Body.—Water enters into the composition of every fluid, and every solid in the body. The bulk of the body, upon an average, is equal to a cube of a little more than sixteen inches on a side ; and the amount of water equals a cube a little more than fourteen inches on a side, or nearly three fourths of the body. Every part, ex- cept bone, enamel, teeth, tendon, dry cuticle, and elastic tis- sue, is rnose than half water. 21. How much Oxygen by weight is found in the body? What bulk of oxygen is found in the venons and what in the arterial blood ? How much does an adult consume by re- spiration and otherwise in a year? What effect does elevation above the sea have upon the amount consumed? 22. State how Hydrogen and Nitrogen are found. 23. Carbonic acid also. 24 How important a constituent is water? Give the size of the body if re- duced to a cube. If this cube were water, how large would it be ? Fig. 2.
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