Digestion Review V1 /36
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1 Name: Class: _ Date: _ Digestion Review V1 /36 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the above parts of the digestive system would be responsible for producing a substance that would emulsify fats? A. V B. W C. X D. Y 2. If structure W in the diagram above were removed, which of the following substances would the person have difficulty digesting? A. fats C. carbohydrates B. peptides D. all of the above 3. Structure Z's main function in the diagram above is: A. production of enzymes C. absorbtion of materials into the body B. breakdown of red blood cells D. excretion of waste material 4. The fingerlike projections along the surface of the intestines are called A. mucosa. B. villi. C. lacteals. D. capillaries. 5. In the digestive process, where is physical digestion initiated? A. Mouth. B. Esophagus. C. Stomach. D. Small intestine. 6. Which one of the following represents the correct sequence of structures that food contacts as it moves along the digestive system? A. Mouth, small intestine, stomach, large intestine, anus. B. Mouth, small intestine, large intestine, esophagus, anus. C. Mouth, esophagus, stomach, small intestine, large intestine. D. Esophagus, pharynx, stomach, large intestine, small intestine. Ver 1 Apr
2 Name: 7. Surgical removal of the gallbladder would immediately affect the body's ability to digest: A. fats. C. starch. E. none of these. B. disaccharides. D. proteins. 8. A function of the pancreas is the secretion of: A. hydrochloric acid for enzyme activation. B. bile for the emulsification of fats. C. bicarbonate ions for the neutralization of hydrochloric acid. D. gastrin for activation of digestive juices. 9. Dr. Nyk Knife cut out his patient's large intestine by mistake and then stitched the remaining parts of the digestive tract together. The important thing that his patient will need to do is A. Eat larger meals D. Eat less greasy foods B. Eat less proteins E. Make fast funeral arrangements C. Drink more fluids 10. The function of saliva is to A. digest fats and proteins B. lubricate food and digest starch C. stop the trachea and esophagus from drying out D. kill bacteria by maintaining an acid medium in the mouth 11. Severe, untreated diahrrea may result in death because: A. prolonged water loss can lead to dehydration B. the absorption of proteins is inhibited C. symbionts in the large intestine are unable to produce sufficient quantities of vitamin K D. acute appendicitis frequently develops with severe diahrrea 12. Secretion of saliva may be stimulated: A. by the smell of anticipated food. B. by the reflexes once something is inside the intestine. C. in response to a stimulus that produces fear. D. in response to increased peristalsis. 13. Which of the following organs is the site where most food digestion occurs: A. liver C. large intestine E. gall bladder B. small intestine D. stomach 14. Which of the following organs is the site where feces is formed: A. liver C. large intestines E. gall bladder B. small intestines D. stomach 15. The lymph vessels of the small intestine are called: A. lacteals B. nodes C. mucosa cells D. villi 16. The approximate ph of the stomach is: A. 2 B. 4 C. 6 D. 8 Ver 1 Apr
3 Name: 17. The chemical digestion of proteins begins in the A. mouth. C. small intestine. B. stomach. D. large intestine. 18. Which of the following organs is the site where vitamin producing bacteria feed on undigested food: A. liver C. large intestine E. gall bladder B. small intestines D. stomach 19. The reaction below takes place in the digestive tract. This reaction would require enzymes released from the A. liver. C. `large intestine. B. stomach. D. salivary glands. 20. The graph below shows the ph in various areas of the digestive tract. The optimum ph for the enzyme trypsin would be A. 2.4 C. 7.8 B. 6.9 D Which of the following digestive enzymes and molecules are mismatched? A. starch - salivary amylase C. fat - maltase B. protein - pepsin D. nucleic acids- nucleases 22. An enzyme responsible for splitting complex protein molecules into simpler peptides is: A. amylase B. lipase C. pepsin D. secretin Ver 1 Apr
4 Name: 23. Hormone-producing cells of the pancreas secrete A. insulin only. C. both insulin and glucagon. B. glucagon only D. both insulin and pancreatic amylase. 24. The major effect of insulin is to A. act on fats. D. decrease blood sugar. B. influence protein metabolism. E. All of the above are true. C. increase blood sugar. 25. Insulin causes an increase in glucose level in the blood. A. True. B. False. 26. At body temperature, which of these combinations is most likely to result in digestion? A. protein, water, pepsin C. protein, bile, pepsin B. protein, HCl, pepsin D. protein, sodium bicarbonate, pepsin 27. All of the following are functions of the liver except: A. production of plasma proteins C. storage of sugar B. regulation of blood cholesterol level D. storage of bile 28. Villi serve to A. absorb nutrients. C. produce antibodies B. secrete bile. D. synthesize vitamins Short Answer 29. What are the 2 hormones that control blood sugar and what organ secretes them? Indicate the whether the hormone raises or lowers the blood sugar. (5 marks) 30. A patient comes into your medical clinic (Norky s Medical) and complains of bright red blood in his stools. Further questioning reveals he has been having difficulty with bowel movements on and off for several weeks. What do you suspect 1. Where he is bleeding from? 2. What he did or didn t eat that caused the problem. 3. What would you recommend to prevent reoccurrence?(3 marks) Ver 1 Apr
5 Digestion Review V1 /36 Answer Section MULTIPLE CHOICE 1. ANS: A PTS: 1 2. ANS: D PTS: 1 3. ANS: C ANS: PTS: 1 4. ANS: B PTS: 1 5. ANS: A PTS: 1 6. ANS: C PTS: 1 7. ANS: A PTS: 1 8. ANS: C PTS: 1 9. ANS: C PTS: ANS: B PTS: ANS: A PTS: ANS: A PTS: ANS: B PTS: ANS: C PTS: ANS: A PTS: ANS: A PTS: ANS: B PTS: ANS: C PTS: ANS: D PTS: ANS: D PTS: ANS: C PTS: ANS: C PTS: ANS: C PTS: ANS: D PTS: ANS: B PTS: ANS: B PTS: ANS: D PTS: ANS: A PTS: 1 SHORT ANSWER 29. ANS: Insulin and glucagon PTS: 1 Ver 1 Apr
6 30. ANS: Hemmeroids PTS: 1 Ver 1 Apr
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Chapter 38 Digestive and Excretory Systems Section 38 1 Food and Nutrition (pages 971 977) This section identifies the nutrients your body needs and explains why water is such an important nutrient Food
Figure Nutrition: omnivore, herbivore, carnivore
Figure 41.1 Nutrition: omnivore, herbivore, carnivore Essential Nutrients: Amino acids Fatty acids Vitamins Minerals Figure 41.2 Complete vs incomplete Omnivore vs herbivore (vegetarian) Table 41.1 Table