A Handbook of Health by Woods Hutchinson (readnow TXT) π
CHAPTER II
WHY WE HAVE A STOMACH
WHAT KEEPS US ALIVE
The Energy in Food and Fuel. The first question that arises in our mind on looking at an engine or machine of any sort is, What makes it go? If we can succeed in getting an answer to the question, What makes the human automobile go? we shall have the key to half its secrets at once. It is fuel, of course; but what kind of fuel? How does the body take it in, how does it burn it, and how does it use the energy or power stored up in it to run the body-engine?
Man is a bread-and-butter-motor. The fuel of the automobile is gasoline, and the fuel of the man-motor we call food. The two kinds of fuel do not taste or smell much alike; but they are alike in that they both have what we call energy, or power, stored up
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Devised by a celebrated physiologist, Professor Schaefer of Edinburgh, and now being adopted by life-saving stations and crews everywhere.
You may sometime be called upon to save another person from drowning. In such a case, as in every emergency, a cool head is the chief thing. Make up your mind just what you are going to do before you do anything,βthen do it quickly! If no one is near enough to hear your shouts for help, and no boat is at hand, if possible throw, or push, to the one in the water a plank or board or something that will float, and he will instinctively grasp it. If you are thrown into the water with a person that can't swim, grasp his collar or hair, and hold him at arm's length, to prevent his dragging you under, until help arrives, or until you can tow him to safety.
Boys and girls, after they have learned to swim, may well practice rescuing each other, so as to be prepared for such accidents.
Artificial Breathing. The best way to revive a person who has been under water and is apparently drowned, is to turn him right over upon his chest on the ground, or other level surface, turning the face to one side so that the nose and mouth will be clear of the ground. Then, kneeling astride of the legs, as shown in the picture, place both hands on the small of the back and throw your weight forward, so as to press out the air in the lungs. Count three, then swing backward, lifting the hands, and allow the lungs to fill themselves with air for three seconds, then again plunge forward and force the air out of the lungs and again lift your weight and allow the air to flow in for three seconds. Keep up this swinging backward and forward about ten or twelve times a minute. This is the newest and by far the most effective wayβin fact the only real wayβof keeping up artificial breathing. It is very, very seldom that any one can be revived after he has been under water for more than five minutes,βindeed, after three minutes,βbut this method will save all who can possibly be saved.
So perfect a substitute for breathing is it that if any one of you will lie down in this position upon his face, and allow some one else to press up and down on the small of his back after this fashion, ten or twelve times a minute, he will find that, without making any effort of his own to breathe, this pumping will draw enough air into his lungs to keep him quite comfortable for half an hour.
Don't waste any time trying to pour the water out of the lungs. As a matter of fact there is very little there, in drowned people. Don't waste any time in undressing, or warming or rubbing the hands or feet to start the circulation. Get this pendulum pump going and the air blowing in and out of the lungs, and if there is any chance of saving life this will do it; then you can warm and dry and rub the patient at your leisure after he has begun to breathe.
QUESTIONS AND EXERCISES CHAPTERS I AND II1. Look up in a dictionary the words physiology and hygiene. What does each mean? If you can, find the derivation of each. 2. Why should everyone learn about the human body? 3. How is the "man-motor" like an "auto"? Compare the fuel of each. 4. From what source do all the fuels get their force or energy? 5. How do plants get their fuel, or food? 6. What is meant in saying that man takes his food at second, or third, hand? 7. Why do we need a mouth? 8. Does a plant have a mouth? Where? 9. Draw a diagram showing how the food is carried into and throughout the body. 10. Describe the parts of the food tube through which it goes. 11. Tell how the body-motor uses bread as a fuel. How is its form changed before it can be used? 12. What are the salivary glands for? What work is done by their juice? 13. What other juices help to melt the bread? 14. Which foods need the most chewing? 15. How is the food carried down the food tube? 16. What is the appendix? Explain how it sometimes causes trouble. 17. How can you tell the difference between colic and appendicitis? 18. On which side is the appendix located? 19. In what parts of the food tube are (a) starch, (b) meats, (c) fat digested? 20. What causes constipation? How may it be avoided? 21. Is drinking water at meals hurtful? If so, how?
CHAPTER III1. If we call the body an engine, what is the fuel? what is the smoke? what are the ashes? 2. Why and how far can we rely upon our natural desires and appetites for food? 3. How should we choose our foods? 4. Name two serious faults that foods may have. 5. Why do we need a variety of foods? 6. What is meant by the term "fuel value of food"? 7. How can we roughly tell to which class a food belongs or what its fuel value is? 8. Why should animal and vegetable foods be used together?
CHAPTER IV1. Name and describe our most common meats. 2. When is pork a valuable food? 3. Why do we digest it slowly? 4. Why should we eat fish only once or twice a week? 5. What food-stuffs are found in milk? 6. Name some vegetables which contain protein food. 7. In planning a week's diet, how often would you use these vegetables, and why? 8. What is our greatest danger in eating meat? 9. Why is it dangerous to eat highly seasoned stews or hashes? 10. Should cheese be eaten in large amounts at a time? Why? 11. Describe the care taken at a good dairy. 12. Why is this necessary? 13. Why is dirty milk less nourishing than clean milk?
CHAPTER V1. Explain the name "starch-sugars." To which class of fuel-food might we say that they belong? 2. Why are they cheaper than meat? 3. Why must these foods be ground and cooked? 4. Which is the better food, white or brown bread? Why? 5. Could we live on starch-foods alone? What is the reason of this? 6. In what foods do we find nitrogen? In what, carbon? 7. What is a "complete food"? Name some. 8. Why must the starchy foods be changed in the body into sugar, or glucose? 9. Name three ways by which bread is made "light." 10. What is yeast? 11. How is bread made? 12. Why should it be thoroughly baked? 13. What causes bread to become sour? 14. Name other important starchy foods. 15. Is sugar a valuable food? Why? 16. In what plants do we find it?
CHAPTER VI1. Why are fats slow of digestion? 2. If they are so valuable as "coal foods," why do we not eat more of them at a meal? 3. Give some reasons for carrying fats as food supply on long voyages and expeditions. 4. In what forms are they best carried? 5. What makes up the emergency field-ration of the German army, and why? 6. What is the most valuable single fat, and why? 7. Name other fats in common use and describe their effects on digestion. 8. State the food values of bacon. 9. Why should nuts be eaten in moderate quantity only? 10. How do nuts compare in cost (a) with other proteins? (b) with other fats? 11. What is the peanut? 12. Why is it hard to digest? 13. What digestive juices "melt" fats? 14. What is oleomargarine and how does it compare with butter?
CHAPTER VII1. What is the necessity of fruits and vegetables in our dietary? Why especially in summer? 2. Give some idea of the food value of fruits as compared with bread and meat. 3. Name the most wholesome and useful fruits. 4. What is the food value of bananas? Why is it very important that they be eaten in moderation only? 5. What does (a) boiling and (b) drying do to fruits? 6. Why seal the jars of preserved fruits? 7. Why can you not eat as much jam, at one time, as raw fruit? 8. What disease is caused by scarcity of fresh vegetables or fruits? 9. Name some of the common vegetables and give their fuel values. 10. Why do we need with our meals the lighter green vegetables, although they have little nutritive value? 11. What vegetables contain starch, what sugar, and what digestible protein? 12. In what form is most of the nitrogen of vegetables?
CHAPTER VIII1. What changes occur in food when it is cooked? Describe some of the changes. 2. What are the advantages of cooking meats and vegetables? 3. Why is it necessary that food should taste good? 4. What has cooking to do with the cost of food? 5. Why is time well spent in cooking food? 6. Describe the different methods of cooking food and tell advantages of each. 7. In what ways can you help make the table attractive and preserve health? 8. In what ways may food be made less digestible and wholesome by cooking? 9. In what way can fried food be made digestible? 10. What is the supposed economy of boiling? 11. Write out a good menu for each meal of the day.
CHAPTER IX1. Why is water necessary in the body? 2. How does the body take in water other than by drinking it? 3. Why is this water sure to be pure? 4. Why is drinking water likely to be impure? 5. Where and when is water perfectly pure? 6. What are our chief sources of water-supply? 7. What is a well? a spring? a reservoir? 8. Which source of water-supply is safest? 9. What are the dangers of well water? 10. How can they be avoided? 11. What are the dangers of river water? 12. What is a filter and how does it work? 13. What makes water rise in a spring or an artesian well? 14. How may water suspected of being unhealthful be made safe to drink? 15. How is sewage disposed of? 16. How can it be kept out of the drinking water? 17. Why does it pay cities to spend large sums to secure pure water? 18. How can a reservoir be protected? 19. What are the risks of house filters? 20. How do bacteria help us in keeping our water-supply pure? 21. Does your city or town have a central source of water-supply? Where is it? 22. Visit the waterworks of your city or town and describe to the class how the water is obtained, how prepared for use, and how distributed to buildings.
CHAPTER X1. How can you prove that beverages are not real foods? 2. What is tea? What is coffee? What are chocolate and cocoa? 3. Why are tea and coffee, if stewed, bad for the digestion? 4. Why is it better for you to let these drinks alone? 5.
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