Category: Health & Medicine
Our body is made of many parts. Its head thinks. Its legs carry it, and its arms and hands take hold of things. The leg cannot do the work of the arm, nor the head do the work of the hand; but each part does only its own work.
=136. Need of nerves.=--The cells of the mouth, stomach, and intestine digest food; the cells of the liver change the food to blood; the cells of the heart pump the blood to fee...
10. Chapter 10Besides food, air is always getting into our bodies. In breathing, air passes through the nose into a tube in the neck. This tube is called the _windpipe_. You can feel it as a...
17. Chapter 17=212. How our body kills disease germs.=--We take disease germs into the body in three ways: first, through the mouth, second, through the nose, and third, through the skin. So...
9. Chapter 9=81. Blood.=--After food becomes blood, it goes to every part of the body to feed the cells. Even a pin prick anywhere in the body draws blood. The blood makes the skin pink. Th...
11. Chapter 11=122. Waste matters.=--The food is burned in the cells. As this burning goes on, the _smoke_ goes off by the lungs and the unburned substances, the _ashes_, go off by the skin a...
16. Chapter 16=197. Catching diseases.=--Our body may get out of order like a machine. Some parts of it may be cut, or broken, or worn out, or hurt in other ways. Then we are sick until it is...
15. Chapter 15=187. Shape of muscles.=--Bones are covered with muscles. Muscles give shape to the body, and move it about. One half of the body consists of muscles. These are arranged in bund...
13. Chapter 13=163. Feeling.=--Nerves go to nearly every cell in the body. They carry news to the brain when anything touches them. The news produces a feeling. Feelings are of three kinds:--
8. Chapter 8=68. Wine.=--All strong drink is alcohol and water. There may be other things to give it taste, but alcohol and water are always in it. No strong drink is over one half alcohol.
5. Chapter 5=28. Kinds of food.=--The cells of the body need water, albumin, fat, sugar, and minerals for food. We sometimes eat sugar alone, and we drink pure water. But most of our food i...
4. Chapter 4=17. The stomach.=--When food is swallowed it goes to the stomach. The stomach is a thin bag. In a man it holds about three pints. Like the mouth, it does three things to the food.
6. Chapter 6=43. Harmful eating.=--Men often eat for the fun of eating, and sometimes they eat harmful things. They chew tobacco and drink strong drinks, because they like their taste, just...
14. Chapter 14=180.= Bones make the body stiff and strong, and give it shape. Long bones reach through the arms and legs, and little bones reach down the fingers and toes. Rounded plates of b...
7. Chapter 7=58. Souring of fruit.=--When a little fruit is set away in a warm place for a day or two it sours or ferments. Anything sweet will do the same thing. Little bubbles rise up thr...
3. Chapter 3=11. Food of the cells.=--All the cells of the body work and wear out. They must eat and keep growing. The food of the cells is the blood. Water, albumin, fat, sugar, and minera...
1. Chapter 1Our body is made of many parts. Its head thinks. Its legs carry it, and its arms and hands take hold of things. The leg cannot do the work of the arm, nor the head do the work o...
2. Chapter 2=5. Water.=--The first thing in the cells is _water_. Water is everywhere in the body. Even the teeth have water. Most of our flesh is water. Without water we should soon shrink...