Chapter 15/15a Worksheet & Reading Guide
1. Briefly describe the structure of the walls of the GI tract.
2. What is the difference between mechanical digestion and chemical digestion?
3. What type of digestion is done by the teeth?
4. What type of digestion is done by saliva? What is the name of the enzyme that does this?
5. What are the three main functions of the stomach?
6. What is the function of hydrochloric acid? What is the pH of the stomach?
7. What are the ONLY two things that get absorbed by the stomach?
8. What macromolecules are chemically digested in the small intestine?
9. What role does bile play in digestion?
10. What molecules are absorbed through the small intestine and where do the different molecules
go?
11. What role does the exocrine pancreas play in digestion?
