DIGESTION 



149 



LYMPHATIC 

 SYSTEM 



Lacteals 



Other 

 Lymphatics 



Glands . 



> Thoracic duct 



Tht lymphatics of the intestines. 

 M*ny originate in the villi of the small 

 intestine. 



f During digestion a milky flnid 

 Contain \ (chyle). 



[ During fasting a. watery fluid. 

 Absorb fatty substances. 

 f Absorb the fluid portion of blood (lymph) 

 which has exuded through the blood- 

 j vessels. 



[ Also other substances for reorganization. 

 1 Engaged in elaborating blood from the 

 1 -- lymph and chyle. 

 In front of backbone, chiefly in thorax. 

 Receptaculum chyli lower portion situ- 

 ated in the abdomen. 



Receives lymph and chyle, and pours them 

 into the blood system. 



QUESTIONS FOR TOPICAL REVIEW 



MOB 



1. What do you understand by nutrition ?. ' 117 



2. How is the process of nutrition carried on ? 117 



3. What further can you state on the subject ? 118 



4. Describe the general plan of digestion . 119 



5. How is the process of mastication carried on ? 119 



6. State what you can in relation to the formation of the teeth 120, 121 



7. What, in relation to their arrangement ? 120, 121 



8. What, in relation to the process of " shedding " ? 120 



9. In relation to the different forms of teeth in different animals ? . . 122, 123 



10. What causes operate to injure or destroy the teeth ? 123 



11. What suggestions and directions are given for the preservation of 



the teeth? 123,124 



12. What do you understand by insalivation ? 124 



13. How is the process of insalivation carried on ? 124, 125 



14. Of what importance is the saliva to the process ? 125, 126 



15. Of what importance are mastication and insalivation ? . 127 



16. Describe the consequences of rapid eating 127, 128 



17. What becomes of the food directly after it has undergone mastica- 



_ tion and insalivation ? 128 



18. Describe the location and formation of the stomach 128, 129 



19. Describe the process by which the gastric juice is formed 129, 130 



20. What are the properties and uses of the gastric juice ? 130 



21. What are the movements of the stomach, and what their uses? 131 



22. What further can you state on the subject? 131 



23. What portions of the food are digested in the stomach ? 132, 133 



24. What are the first changes of digestio'n ? 132 



25. What further can you state in relation to the stomach ? 132, 133 



26. Describe the intestines 134 



27. Describe the process of intestinal digestion 134, 135 



28. What do you understand by a-bsorption ? 136 



