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Chapter 8 Student: ___________________________________________________________________________ 1. Mechanical digestion refers to: A.breakdown of food particles by enzymes B.cutting food into smaller pieces with a knife and fork C.churning of food in the muscular stomach D.hydrolysis of nutrients 2. The function of the digestive system is: A.to ingest food B.to digest food C.absorb nutrients D.eliminate indigestibles E.All of the choices are correct. 3. The extension of the soft palate is called the: A.epiglottis B.adenoid C.hard palate D.uvula 4. Erosion of teeth due to bacterial digestion of sugar resulting in acid production is called: A.dental caries B.molar infection C.dentin D.peristalsis 5. Movement of food from the esophagus to the stomach requires: A.relaxation of the diaphragm B.contraction of the diaphragm C.relaxation of a sphincter D.contraction of a sphincter 1 6. Which of the following is in correct order of food movement in the gastrointestinal tract? A.esophagus, stomach, pharynx B.pharynx, stomach, esophagus C.pharynx, esophagus, stomach D.stomach, pharynx, esophagus 7. Protein digestion begins in the: A.oral cavity B.esophagus C.stomach 8. Which of the following functions in the storage and elimination of feces? A.small intestines B.large intestines C.rectum 9. Food is prevented from entering the trachea when you swallow by the: A.pharynx B.uvula C.nasopharynx D.epiglottis 10. Which of the following is a muscular tube that passes foodstuffs from the mouth to the stomach? A.epiglottis B.trachea C.nasopharynx D.esophagus 11. The primary function of the stomach is: A.to break down fats B.to store food, churn, begin digestion C.to absorb major nutrients D.package feces 2 12. The rhythmic contractions of the digestive tract that allow movement of foodstuffs are called: A.peritoneum B.periosteum C.peristalsis D.perineum 13. The "ball" of food that is moved through the esophagus is called: A.sphincter B.cannula C.bolus D.chyme 14. The innermost layer of the digestive tract that is a mucous secreting epithelium is: A.mucosa B.submucosa C.muscularis D.serosa 15. The layer of tissue in the digestive wall, which consists of a layer of longitudinal and circular smooth muscles is: A.mucosa B.submucosa C.muscularis D.serosa 16. The central opening of a tube is called: A.lacuna B.laluna C.lumen D.lamella 3 17. Choose the CORRECT statement. A.Pepsin is activated by HCl. B.Helicobacter pylori causes gastric ulcers. C.Alcohol is absorbed by the stomach. D.Mucus is a protective secretion in the stomach. E.All of the choices are correct. 18. The thick soupy acidic liquid that leaves the stomach is called: A.mucus B.chyme C.mesenchyme D.bolus 19. The digestive organ that functions to store food, kill bacteria, and partially digest proteins is: A.mouth B.esophagus C.stomach D.small intestines E.large intestines 20. Food is primarily digested by the: A.liver B.pancreas C.stomach D.small intestine E.large intestine 21. Starch digestion is confined to the: A.mouth and large intestine B.stomach and large intestine C.mouth and stomach D.mouth and small intestine 4 22. Name 2 accessory glands that secrete enzymes that digest starch: A.salivary glands B.liver C.pancreas D.salivary glands and liver E.salivary glands and pancreas 23. The digestive enzyme responsible for fat digestion is: A.amylase B.amylose C.lipase D.peptidase E.glycerase 24. The digestive organ that produces maltase and peptidase is: A.liver B.pancreas C.stomach D.small intestine E.large intestine 25. The digestive organ that contains microvilli or a brush border on the luminal cells: A.liver B.pancreas C.stomach D.small intestine E.large intestine 26. Which of these organs is NOT involved in digestion? A.spleen B.pancreas C.gallbladder D.liver 5 27. Which of the following is considered an accessory gland? A.pharynx B.esophagus C.stomach D.cecum E.pancreas 28. The pancreas secretes enzymes that act upon: A.carbohydrates B.fat C.protein D.All of the choices are correct. 29. Which of the following human digestive enzymes is INCORRECTLY matched to its substrate? A.pepsin-protein B.trypsin-nucleic acid C.salivary amylase-starch D.lipase-fat E.maltase-maltose 30. The small lymphatic capillaries that reside in the small intestines and absorb fats are: A.villi B.lacteals C.gastric glands D.duodena 31. Which of the following is the correct pairing of the structure with its secretion? A.pancreas; bile B.liver; bile C.gallbladder; bile 6 32. Choose the following statement concerning hydrolytic enzymes that is NOT accurate. A.Salivary amylase breaks down starch. B.Pepsin breaks down proteins. C.Peptidases break down peptides. D.Maltase breaks down glucose. 33. Gastric glands in the stomach produce: A.gastric juice B.HCl C.pepsin D.All of the choices are correct. 34. Which of the following is NOT an accurate statement concerning digestion/absorption? A.Foods are broken down and absorbed into the blood. B.Digestive enzymes are secreted from several glands. C.The gallbladder manufactures bile. D.Bile secreted from the gallbladder emulsifies fats. 35. Three major classes of macronutrients required in the diet are: A.carbohydrates, vitamins, fat B.proteins, carbohydrates, minerals C.fats, carbohydrates, proteins D.vitamins, minerals, proteins 36. The quickest, most readily available source of energy for the body is: A.protein B.starch C.glucose D.fatty acids 37. The major group of organic molecules that contains cholesterol and fats are: A.lipids B.carbohydrates C.proteins D.nuclei acids 7 38. Fatty deposits that may block arteries are called: A.liposcleroses B.fatty acid blockage C.plaques D.cysts 39. Which of the following is called "bad" because it transports cholesterol? A.LDL B.HDL 40. A small projection that extends from the cecum is called: A.the pancreas B.the gallbladder C.the epiglottis D.the appendix 41. Organic compounds (not major nutrients) that are required for metabolic reactions and must be taken in the diet are: A.minerals B.vitamins C.buffers D.enzymes 42. Vitamins often form: A.coenzymes B.structural proteins C.antioxidants D.coenzymes and antioxidants 43. Which of the following are macronutrients? A.Ca, K, Na, Cl, Mg B.Zn, Cu, Fe 8 44. Having a habit of eating to excess and then purging is called: A.overweight B.obesity C.bulimia nervosa D.anorexia nervosa 45. Which of the flowing vitamins is water soluble? A.Vitamin A B.Vitamin D C.Vitamin E D.Vitamin K E.Vitamin C 46. The human body requires ____ different amino acids. A.100 B.50 C.30 D.20 E.10 47. Free radicals can donate electrons to: A.DNA B.proteins found in the plasma membrane C.lipids found in the plasma membrane D.DNA and proteins found in the plasma membrane E.DNA, proteins found in the plasma membrane, and lipids found in the plasma membrane 9 Chapter 8 Key 1. Mechanical digestion refers to: a. b. C d. breakdown of food particles by enzymes cutting food into smaller pieces with a knife and fork churning of food in the muscular stomach hydrolysis of nutrients Mader - 008 Chapter... #1 2. The function of the digestive system is: a. b. c. d. E to ingest food to digest food absorb nutrients eliminate indigestibles All of the choices are correct. Mader - 008 Chapter... #2 3. The extension of the soft palate is called the: a. b. c. D epiglottis adenoid hard palate uvula Mader - 008 Chapter... #3 4. Erosion of teeth due to bacterial digestion of sugar resulting in acid production is called: A b. c. d. dental caries molar infection dentin peristalsis Mader - 008 Chapter... #4 1 5. Movement of food from the esophagus to the stomach requires: a. b. C d. relaxation of the diaphragm contraction of the diaphragm relaxation of a sphincter contraction of a sphincter Mader - 008 Chapter... #5 6. Which of the following is in correct order of food movement in the gastrointestinal tract? a. b. C d. esophagus, stomach, pharynx pharynx, stomach, esophagus pharynx, esophagus, stomach stomach, pharynx, esophagus Mader - 008 Chapter... #6 7. Protein digestion begins in the: a. oral cavity b. esophagus C stomach Mader - 008 Chapter... #8 8. Which of the following functions in the storage and elimination of feces? a. small intestines b. large intestines C rectum Mader - 008 Chapter... #9 9. Food is prevented from entering the trachea when you swallow by the: a. b. c. D pharynx uvula nasopharynx epiglottis Mader - 008 Chapter... #10 2 10. Which of the following is a muscular tube that passes foodstuffs from the mouth to the stomach? a. b. c. D epiglottis trachea nasopharynx esophagus Mader - 008 Chapter... #11 11. The primary function of the stomach is: a. B c. d. to break down fats to store food, churn, begin digestion to absorb major nutrients package feces Mader - 008 Chapter... #12 12. The rhythmic contractions of the digestive tract that allow movement of foodstuffs are called: a. b. C d. peritoneum periosteum peristalsis perineum Mader - 008 Chapter... #13 13. The "ball" of food that is moved through the esophagus is called: a. b. C d. sphincter cannula bolus chyme Mader - 008 Chapter... #16 14. The innermost layer of the digestive tract that is a mucous secreting epithelium is: A b. c. d. mucosa submucosa muscularis serosa Mader - 008 Chapter... #17 3 15. The layer of tissue in the digestive wall, which consists of a layer of longitudinal and circular smooth muscles is: a. b. C d. mucosa submucosa muscularis serosa Mader - 008 Chapter... #19 16. The central opening of a tube is called: a. b. C d. lacuna laluna lumen lamella Mader - 008 Chapter... #21 17. Choose the CORRECT statement. a. b. c. d. E Pepsin is activated by HCl. Helicobacter pylori causes gastric ulcers. Alcohol is absorbed by the stomach. Mucus is a protective secretion in the stomach. All of the choices are correct. Mader - 008 Chapter... #22 18. The thick soupy acidic liquid that leaves the stomach is called: a. B c. d. mucus chyme mesenchyme bolus Mader - 008 Chapter... #23 4 19. The digestive organ that functions to store food, kill bacteria, and partially digest proteins is: a. b. C d. e. mouth esophagus stomach small intestines large intestines Mader - 008 Chapter... #24 20. Food is primarily digested by the: a. b. c. D e. liver pancreas stomach small intestine large intestine Mader - 008 Chapter... #27 21. Starch digestion is confined to the: a. b. c. D mouth and large intestine stomach and large intestine mouth and stomach mouth and small intestine Mader - 008 Chapter... #28 22. Name 2 accessory glands that secrete enzymes that digest starch: a. b. c. d. E salivary glands liver pancreas salivary glands and liver salivary glands and pancreas Mader - 008 Chapter... #29 5 23. The digestive enzyme responsible for fat digestion is: a. b. C d. e. amylase amylose lipase peptidase glycerase Mader - 008 Chapter... #30 24. The digestive organ that produces maltase and peptidase is: a. b. c. D e. liver pancreas stomach small intestine large intestine Mader - 008 Chapter... #31 25. The digestive organ that contains microvilli or a brush border on the luminal cells: a. b. c. D e. liver pancreas stomach small intestine large intestine Mader - 008 Chapter... #32 26. Which of these organs is NOT involved in digestion? A b. c. d. spleen pancreas gallbladder liver Mader - 008 Chapter... #33 6 27. Which of the following is considered an accessory gland? a. b. c. d. E pharynx esophagus stomach cecum pancreas Mader - 008 Chapter... #34 28. The pancreas secretes enzymes that act upon: a. b. c. D carbohydrates fat protein All of the choices are correct. Mader - 008 Chapter... #35 29. Which of the following human digestive enzymes is INCORRECTLY matched to its substrate? a. B c. d. e. pepsin-protein trypsin-nucleic acid salivary amylase-starch lipase-fat maltase-maltose Mader - 008 Chapter... #36 30. The small lymphatic capillaries that reside in the small intestines and absorb fats are: a. B c. d. villi lacteals gastric glands duodena Mader - 008 Chapter... #38 31. Which of the following is the correct pairing of the structure with its secretion? a. pancreas; bile B liver; bile c. gallbladder; bile Mader - 008 Chapter... #46 7 32. Choose the following statement concerning hydrolytic enzymes that is NOT accurate. a. b. c. D Salivary amylase breaks down starch. Pepsin breaks down proteins. Peptidases break down peptides. Maltase breaks down glucose. Mader - 008 Chapter... #51 33. Gastric glands in the stomach produce: a. b. c. D gastric juice HCl pepsin All of the choices are correct. Mader - 008 Chapter... #52 34. Which of the following is NOT an accurate statement concerning digestion/absorption? a. b. C d. Foods are broken down and absorbed into the blood. Digestive enzymes are secreted from several glands. The gallbladder manufactures bile. Bile secreted from the gallbladder emulsifies fats. Mader - 008 Chapter... #54 35. Three major classes of macronutrients required in the diet are: a. b. C d. carbohydrates, vitamins, fat proteins, carbohydrates, minerals fats, carbohydrates, proteins vitamins, minerals, proteins Mader - 008 Chapter... #56 36. The quickest, most readily available source of energy for the body is: a. b. C d. protein starch glucose fatty acids Mader - 008 Chapter... #58 8 37. The major group of organic molecules that contains cholesterol and fats are: A b. c. d. lipids carbohydrates proteins nuclei acids Mader - 008 Chapter... #64 38. Fatty deposits that may block arteries are called: a. b. C d. liposcleroses fatty acid blockage plaques cysts Mader - 008 Chapter... #65 39. Which of the following is called "bad" because it transports cholesterol? A LDL b. HDL Mader - 008 Chapter... #68 40. A small projection that extends from the cecum is called: a. b. c. D the pancreas the gallbladder the epiglottis the appendix Mader - 008 Chapter... #69 41. Organic compounds (not major nutrients) that are required for metabolic reactions and must be taken in the diet are: a. B c. d. minerals vitamins buffers enzymes Mader - 008 Chapter... #73 9 42. Vitamins often form: a. b. c. D coenzymes structural proteins antioxidants coenzymes and antioxidants Mader - 008 Chapter... #74 43. Which of the following are macronutrients? A Ca, K, Na, Cl, Mg b. Zn, Cu, Fe Mader - 008 Chapter... #80 44. Having a habit of eating to excess and then purging is called: a. b. C d. overweight obesity bulimia nervosa anorexia nervosa Mader - 008 Chapter... #86 45. Which of the flowing vitamins is water soluble? a. b. c. d. E Vitamin A Vitamin D Vitamin E Vitamin K Vitamin C Mader - 008 Chapter... #89 46. The human body requires ____ different amino acids. a. b. c. D e. 100 50 30 20 10 Mader - 008 Chapter... #91 10 47. Free radicals can donate electrons to: a. b. c. d. E DNA proteins found in the plasma membrane lipids found in the plasma membrane DNA and proteins found in the plasma membrane DNA, proteins found in the plasma membrane, and lipids found in the plasma membrane Mader - 008 Chapter... #95 11 Chapter 8 Summary Category Mader - 008 Chapter... 1 # of Questions 47