THE DIGESTION 



221 



4. Which classes of foods go through the liver ? 



5. Which classes of foods are digested in only one 

 organ ? 



6. Which classes of foods are digested in two organs ? 

 How do the facts given in the table show 



7. That the pancreatic juice is the most important of 

 the digestive secretions ? 



8. That bread needs to be kept in the mouth for a 

 longer time than lean meat. 



9. That lean meat (a form of proteid) fried so that the 

 grease soaks into it, is hard to digest? (Suggestion: 

 Where is fat digested? Where should the digestion of 

 proteids begin ?) 



10. That doughnuts, or batter-cakes, or any starchy food 

 cooked so as to become grease-soaked, are hard to digest. 



394. How the Food gets into the Tissues. The absorp- 

 tion of the emulsified fats by the lymphatics has been 



