Using the key choices below, match the description given with the structure in the alimentary canal that it describes. Choices may be used more than once. A. Anus G. Microvilli L. Salivary Glands B. Appendix H. Mouth (Oral cavity) M. Small intestines C. Esophagus I. Pancreas N. Stomach D. Gallbladder J. Pharynx O. Tongue E. Large Intestines (Colon) K. Rectum P. Villi
F. Liver
1. Stores bile until it is secreted.
2. Fingerlike extensions in the intestinal wall that increase surface area
3. Two anatomical regions where mechanical digestion occurs.
4. Organ that mixes food in the mouth.
5. Common passage for food and air.
6. Literally a food chute; it has no digestive or absorptive role.
7. Projections of the plasma membrane of a cell that increase the cell’s surface area. 8.Produces a juice that neutralizes stomach acid and contains digestive enzymes. 9. Organ responsible for absorption of most nutrients.
10. Organ primarily involved in water absorption and feces formation.
11. Blind sac hanging from the initial part of the colon.
12. Organ in which protein digestion begins.
13. Organ into which the stomach empties.
14. Organ that receives pancreatic juice and bile.
15. Opening through which feces are expelled from the body.
16. Produces bile.
17. Produce enzymes that begin carbohydrate digestion.
18. Stores feces until they are excreted.
Part 4: Answer the following questions.
1. What is the end product starch digestion?
2. What is the end product protein digestion?
3. What is the end product fat digestion?
4. Where does starch digestion begin?
5. Where is starch digestion completed?
6. Where does protein digestion begin?
7. Where is protein digestion completed?
8. Where does fat digestion begin?
9. Where is fat digestion completed?
10. Explain the difference between mechanical digestion and chemical digestion. 11. Explain how the small intestines are well adapted for absorption.