15.1 Introduction
1. Describe the general functions of the digestive system.
2. Name the major organs of the digestive system.

15.2 General Characteristics of the Alimentary Canal
3. Describe the structure of the wall of the alimentary canal.
4. Explain how the contents of the alimentary canal are mixed and moved.

15.3 Mouth
5. Describe the functions of the structures associated with the mouth.
6. Describe how different types of teeth are adapted for different functions, and list the parts of a tooth.

15.4–15.10 Salivary Glands–Large Intestine
7. Identify the function of each enzyme secreted by the digestive organs.
8. Describe how digestive secretions are regulated.
9. Describe the mechanisms of swallowing and defecating.
10. Explain how the products of digestion are absorbed.

15.11 N utrition and Nutrients
11. List the major sources of carbohydrates, lipids, and proteins.
12. Describe how cells utilize dietary carbohydrates, lipids, and proteins.
13. Identify the functions of each fat-soluble and water-soluble vitamin.
14. Identify the functions of each major mineral and trace element.
15. Describe an adequate diet.