370 TEE HUMAN BODY AND ITS FOOD 



Alcohol cannot be looked upon as a food, for it has the effects of a 

 poison. 



Many patent medicines contain alcohol, and are as dangerous as 

 alcoholic liquors. 



373. Exercises. 



1. What nutrient in milk is coagulated when milk sours? What 

 stomach ferment clots it? What is a "full cream" cheese? What 

 nutrients does it contain? What ferment is there in the dessert called 

 11 junket"? 



2. What are the chief nutrients in bread, meat, sweet potatoes, 

 peanuts, fruit? 



3. Name an easily digested fatty food. 



4. Trace the course of meat through the alimentary canal until it 

 reaches the cells, naming the organs it passes through, and the change 

 each brings about. 



5. Cases have been known in which surgeons have removed a pa- 

 tient's stomach, and attached the small intestine directly to the 

 esophagus. Could a person without a stomach digest all kinds of 

 food? What would be the chief disadvantage? 



6. What changes occur in the absorption of food? 



7. Name all the different functions of the liver that have been given 

 in this chapter. 



8. Show that the energy of animal bodies comes, finally, from the 

 sun. 



9. In what part of the digestive tract are fats digested? What 

 ferment is lacking if the body cannot digest them properly? What 

 ferments are lacking if potatoes cannot be digested? Meat? 



10. What sugars does the body derive from cane sugar? From 

 malt sugar? 



11. Why do we "raise" bread? How? Why is bread " heavy," 

 or "soggy"? What is the objection to our eating it? How is cake 

 raised? How is ' ' angel food " cake raised? 



12. Suggest a reason why "toasted" bread is so healthful. Why 

 are baked potatoes healthful? Why is a soft-boiled egg more digestible 

 than a hard-boiled one? 



