ORGANS OF DIGESTION. 139 



10. Give the dental formulae for three ungulates. 



11. In what animals are some of the teeth greatly enlarged? 



12. Do any runfinants have upper incisors? 



13. Name the important features of the pharynx. 



14. Name every organ in the abdominal cavity, telling with what other 

 organs it is in contact. 



15. Describe as much of the peritoneum as you can see in your specimen. 



16. Draw the alimentary canal in its natural position, showing all 

 ducts leading into it, and label all parts. 



17. How much longer is the small intestine than the large one? 



18. On what does the length of the canal in different mammals largely 

 depend? 



19. Make a section of a portion of the wall of the stomach and draw 

 what is seen, labeling all parts. 



20. Make a section of the small intestine, draw what can be seen by 

 naked eye or simple microscope. 



21. About how many villi to each square millimeter? 



22. Describe the two channels through which the food passes from 

 the intestines to the heart. 



23. Make a somewhat diagrammatic drawing representing that part 

 of the venous system conveying the food from the intestines to the heart. 



24. What is the size of the cecum in other mammals than the cat? 



25. Give the location, size, and form of the salivary glands 



26. Name the lobes of the liver in order of their size. 



27. How is the liver held in place? 



28. Draw the pancreas, showing ducts leading to the intestine. 



29. Draw the complex stomach characteristic of many ruminants. 



30. What is the cloaca and in what mammals is it present? 



