DIGESTION AND ABSORPTION. 119 



9. What is digestion ? 



10. Why is digestion necessary ? 



11. Is all our food easily dissolved? 



13, 14. How are fats digested ? What is an emulsion ? What are 

 the lacteals ? What is chyle ? 



15, What has the muscle of the alimentary canal to do with 

 digestion ? Is it voluntary, or involuntary ? 



16, What are the changes that constitute digestion ? 



17, How many sets of teeth do we have? When do we have the 

 largest number of teeth in our jaws ? 



18, Give the number and names of the first set. 



19, Give the number and names of the second set. 



20, How do the teeth indicate the habits of the animal ? 



21, What is the structure of a tooth ? 



22, What is the work of the teeth? 



23, How may the teeth be injured ? 



24, How is the mouth kept moist? 



25, Name the salivary glands. Give their location. 



26, What are their outlets ? 



27, What is the use of saliva ? 



28, Where is the stomach situated? 



29, Describe the glands of the stomach. How is the gastric juice 

 mixed with the food? 



30, What is the pylorus ? 



31, What two large glands are connected with the upper end of 

 the small intestine? 



32, Where is the liver situated? What three things does it 

 do? 



33, What is jaundice? What does the bile do? 



34, Where is the pancreas? What is its structure? 



35, What does the pancreatic juice do? 



36, What glands are there in the walls of the small and the large 

 intestine? What is the fluid that comes from them called, and 

 what is its use ? 



37, Give the divisions of the alimentary canal. Enumerate the 

 digestive glands in the canal. What is their product? Enume- 

 rate the digestive glands outside of the canal. What is their 

 product? 



