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This eBook from the Gutenberg Project consists of approximately 74 pages of information about Object Lessons on the Human Body.

2.  My stomach is an oblong, soft, and fleshy bag, extending from my left to my right side, below my lungs and heart.

3.  It is composed of three coats or membranes, and resembles tripe.

4.  The outer coat is smooth, thick, and tough.  It supports and strengthens the stomach.

5.  The middle coat is fibrous.  Its fibres have the power of contracting, sometimes pressing upon the food, and sometimes pushing it along toward the opening which leads out of the stomach.

6.  The inner coat is soft, thick, spongy, and wrinkled.  It prepares a slimy substance and a fluid.  The slimy substance prevents the stomach from being irritated by the food.  The fluid dissolves the food.

7.  Food passes through several changes after it enters the mouth.

8.  It is changed into pulp in the mouth, by the action of the teeth and the saliva.  This is called mastication.  It is changed in the stomach, by the action of the stomach and the gastric juice, into another kind of pulp called chyme.  The chyme is changed by the bile and another kind of juice, called pancreatic juice; these separate the nourishing from the waste substance.  The nourishing, milk-like substance is called chyle.  The waste substance passes from the body.  The chyle is poured into a vein behind the collar bone, and passes through the heart to the lungs, where it is changed into blood.

9.  If I would have a healthy stomach,
    I must be careful what kind of food I eat,
    I must be careful how much I eat,
    I must be careful how I eat,
    I must be careful when I eat.

10.  I must eat wholesome food, good bread, ripe fruits, rather than rich pies or jellies.

11.  I must eat enough food, but not too much.

12.  I must eat slowly,
    I must masticate my food thoroughly,
    I must masticate and swallow ray food without drinking

13.  I must take my food regularly but not too often,
    I must rest before and after eating, if possible,
    I must not eat just before bedtime.

14.  I must breathe pure air,
    I must sit, stand, and walk erect,
    I must not drink alcoholic liquors,
    I must not snuff, smoke, or chew tobacco.

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QUESTIONS FOR THE FORMULA.

1.  Describe the process of eating.[2] See page 21.

2.  Where does the food go after it is chewed?

3.  Describe the stomach.

4.  Of what is the stomach composed?

5.  Describe the outer coat of the stomach, and tell its use.

6.  Describe the middle coat of the stomach, and tell its use.

7.  Describe the inner coat of the stomach, and tell its use.

8.  What happens to the food after it enters the mouth?

9.  Tell about these changes.

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