Download NAME: DATE: 14/09/2016 OPTION D: UNIT 2: DIGESTION Describe

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NAME:
DATE: 14/09/2016
OPTION D:
UNIT 2: DIGESTION
1. Describe when the secretion of digestive juices must be controlled.
2. State to mechanisms by which secretion of gastric juices is controlled.
3. Define and draw a labelled diagram of an alimentary canal.
4. Contrast endocrine glands with exocrine glands.
5. Label a diagram of an exocrine gland with the following terms: secretory cells, lumen, duct, secretory
vesicles, basement membrane and acinus.
6. Discuss the relationship between the structures of an exocrine gland cell and the function of the cell.
7. State the name and location of three exocrine glands associated with the alimentary canal.
8. State the composition of saliva, gastric juice and pancreatic juice.
9. Outline three roles of acid in the stomach.
10. Outline the role of the following structures of villi epithelial cells: tight junctions, microvilli, mitochondria,
pinocytic vesicles, proteins imbedded on the apical surface and proteins imbedded on the basal surface
11. List benefits of fiber in a healthy diet.
12. State the relationship between food fiber contents and rate of transit through the large intestine.
13. Define dietary fiber.
14. State two examples of dietary fiber.
15. Define egestion.
16. List materials that are egested from the body.
17. State the role stomach mucus.
18. State the cause of ulcer and acid reflux.
19. Outline the role of the H+, K+ -ATPase protein pump in the production of an acidic stomach.
20. Outline the use, function and effect of proton pump inhibitors to treat gastric disease.
21. Outline the cause and consequences of cholera infection.
22. Explain the effect of cholera toxin on intestinal cells.
23. Define stomach ulcer.
24. Outline evidence that suggest Helicobacter pylori infection has a role in stomach ulcer and stomach cancer.
25. List three features that can be used to identify exocrine gland cells as viewed in electron micrographs.
26. List four features that can be used to identify villus epithelium cell as viewed in electron micrographs.
27. Describe how William Beaumont was able to determine the role of the stomach in chemical digestion of
food.