8 HUMAN PHYSIOLOGY CHAP. 



body. Blood is the liquid upon which the life and well- 

 being of each cell depend. 



2. Then we shall see what the different foods are, 

 where they come from, and how they are prepared for 

 the blood. 



3. Next we shall study water and other drinks taken 

 with our meals. Tobacco and other narcotics will be 

 treated in the same chapter. 



4. We shall then learn how oxygen of the air gets 

 into the blood. This will be studied under Respiration. 



5. Under Digestion and Absorption we shall learn 

 how the solid and liquid foods are dissolved and taken 

 into the blood. 



6. After we have learned how the foods and oxygen 

 get into the blood we shall study Circulation to see 

 how the blood is carried to the cells in all parts of the 

 body. 



7. In the chapter on Foods in the Tissues we shall 

 learn how the various things we eat and drink are used 

 by the cells, and how the cells grow, keep warm, and 

 do their work. 



8. We shall then study the skin and the kidneys to 

 see how the heat of the body is regulated, and how the 

 waste products are removed from the blood and elim- 

 inated from the body. 



9. The bones and muscles will next be studied to 

 learn what the framework of the body is and how the 

 muscles act on the bones to produce motion and to do 

 work. In this connection we shall also study voice 

 and speech. 



