LESSON SEVEN 
HOW FOOD IS DIGESTED 
1. Making ready for digestion. 
2. What is done in the mouth. 
3. From mouth to stomach. 
4. Compartments of cow’s stomach. 
5. The stomach churn. 
6. Stomach secrétions. 
7. Stomach digestion. 
8. From stomach to intestines. 
9. The two intestines. 
10. Food absorption. 
11. Villi cells. 
12. From intestines to blood. 
13. How food is distributed. 
14. Respiration. 
15. Excretion. 
Note to the Teacher.—In this lesson a splendid oppor- 
tunity is offered for linking some of the facts of physi- 
ology with daily life. The processes of nutrition, as here 
outlined, are brought into their proper relationship with 
the various organs of the body and with the functions of 
these organs in their work of growth, life and activity. 
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