1. Digestive System Four Corners

2. 1. In the diagram below, the esophagus is represented by which letter? A.F B.K C.J D.H

3. 2. In the diagram below, C represents which organ of the digestive system? A.Small Intestine B.Anus C.Gall Bladder D.Stomach

4. 3. In the diagram below, A represents which part of the digestive system? A.Esophagus B.Mouth C.Jejunum D.Rectum

5. 4. In the diagram, K represents which organ of the digestive system? A.Small intestine B.Sigmoid colon C.Appendix D.Anus

6. 5. In the diagram, D represents which organ of the digestive system? A.Ascending colon B.Stomach C.Liver D.Appendix

7. 6. All of the following are parts of the alimentary canal except? A. Mouth B.Gall Bladder C.Esophagus D.Small intestine

8. 7. The layer of the intestinal tract that contains blood vessels, lymph vessels, and nerves is the A.Mucosa B.Muscularis C.Serosa D.Submucosa

9. 8. What is the function of the mucous secreted in the stomach? A.Digest proteins into peptides B.Lubricates and protect the stomach wall C.Denatures proteins and kills microbes D.Aid in absorption of vitamin B12

10. 9. In the diagram, the rectum is represented by which letter? A.G B.J C.K D.F

11. 10. In the diagram below, E represents which organ of the digestive system? A.Mouth B.Liver C.Appendix D.Esophagus

12. 11. Where in the digestive system does most of the absorption of nutrients occur? A.Small intestine B.Stomach C.Mouth D.Colon

13. 12. The regulator of absorptive units in the small intestine is the A.Hypothalamus B.Parasympathetic C.Sympathetic D.Pituitary Gland

14. 13. What triggers the defecation reflex in the colon? A.Rectal Distention B.Secretion of gastrin C.Secretin D.Secretion of gastric juices

15. 14. In the diagram, I represents which organ of the digestive system? A.Transverse colon B.Cecum C.Small intestine D.Liver

16. 15. In the diagram below, H represents which organ of the digestive system? A.Pancreas B.Liver C.Gall bladder D.Mouth

17. 16. Which of the following pancreatic enzymes breaks down lipids? A.Pancreatic Amylase B.Protease C.Nuclease D.Pancreatic lipase

18. 17. Which component of the pancreatic juice neutralizes the acid in chyme? A.Pancreatic Lipases B.Pancreatic Amylase C.Bicarbonate ions D.Protease

19. 18. In the diagram below, the liver is represented by which letter? A.B B.D C.J D.H

20. 19. In the diagram below, the stomach is represented by which letter? A.B B.H C.I D.G

21. 20. Which organ in the digestive system produces bile? A.Gall Bladder B.Liver C.Pancreas D.Appendix