How to keep well : a text-book of health for use in the lower grades of schools with special reference to the effects of alcholic drinks, tobacco and other narcotics on the bodily life . ounds youget. The lungs lie on each side of your chest, just withinthe place you struck. The chest sounds quite hollow,about like a drum, because the lungs within it are full of air. How do the lungs, or* lights as the butchers callthem, look ? They are twolarge, pinkish, spongy organs,a mass of air-passages, witharteries, veins, and capillaries,which extend to the collar-bone in front and go downbelow the sho
How to keep well : a text-book of health for use in the lower grades of schools with special reference to the effects of alcholic drinks, tobacco and other narcotics on the bodily life . ounds youget. The lungs lie on each side of your chest, just withinthe place you struck. The chest sounds quite hollow,about like a drum, because the lungs within it are full of air. How do the lungs, or* lights as the butchers callthem, look ? They are twolarge, pinkish, spongy organs,a mass of air-passages, witharteries, veins, and capillaries,which extend to the collar-bone in front and go downbelow the shoulder-blade be-hind. The next time you go tothe market, ask the market-man to show you the lungs,or lights, of a calf or off a small piece, andexamine it at home a piece in your hand,and you find you have some-thing quite light and soft, which sinks under yourfinger if you press it, and rises again like a will also notice a crackling sound caused by airbeing forced out of the air-cells. In fact, the lungs, like a sponge, are made up of acountless number of the smallest elastic cavities, intoevery one of which blood and air keep running, each on. Fig. 37. — Windpipe and one of theLungs. HOW AND WHY WE BREATHE IO5 its own side, to bid good-day to each other, shake handsas it were, and then hurry out as briskly as they camein. 82. The Air-Passages.—The air is drawn into thelungs through the mouth, the nostrils, and the windpipe. The nostrils are really the passage-ways for the air,and warm the air somewhat before it gets into the you lean your head back, you can easily feel in themiddle of the neck, in front, a stiff tube. This is the windpipe, which opens into the back of themouth. There is a small lid of gristle in front of the open topof the windpipe, which, as you have been told before, iscalled the epiglottis. It stands upright when we drawair in, and does not in the least prevent the breathfrom entering the windpipe. The upper
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecthygiene, bookyear1901
