CHAPTER 37: ANIMAL NUTRITION<BR><BR> Read pgs. 799-806<BR><BR> 1. Describe the structure of the walls of the alimentary canal, explain how food moves through the tract, and how it is temporarily held in the stomach before moving to the intestine. ("Alimentary, Dr. Watson.") <BR><BR> 2. Name the four accessory organs of the digestive system.<BR><BR> 3. Describe the nature and functions of saliva. What enzyme is present in it?<BR><BR> 4. What is the purpose of the epiglottis? Where is it located?<BR><BR> 5. Describe, in detail the epithelium of the stomach, including the types of cells and their secretions.<BR><BR> 6. What is the purpose of the acid secreted by the stomach? How is the control of acid secretion accomplished?<BR><BR> 7. Describe the anatomy of the small intestine, including the names of each section and the structure of the lining.<BR><BR> 8. Describe the anatomy of the large intestine (colon). What is the common bacterial inhabitant, and how does it benefit us?<BR><BR>