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Chapter 17: Digestive System Test 1. Which Intestinal Layer Accounts For

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Chapter 17: Digestive System Test 1. Which Intestinal Layer Accounts For Chapter 17: Digestive System Test 1. Which intestinal layer accounts for the action of the peristaltic waves? A) serosa B) muscularis C) submucosa D) mucous 2. The alimentary tube is around _____ meters long. A) 2 B) 4 C) 6 D) 9 3. The _____ nervous system division usually stimulates and promotes digestion. A) somatic B) sympathetic C) central D) parasympathetic 4. The processes of chewing are referred to as _____. A) churning B) mastication C) peristalsis D) deglutition 5. Gastric enzymes are secreted by the _____ cells. A) chief B) goblet C) parietal D) oxyntic 6. Proteins are digested or broken down by the _____ in the stomach. A) pepsinogen B) pepsin C) hydrochloric acid D) lipase 7. Parasympathetic stomach impulses cause all of the following except which one? A) secretion of somatostatin B) inhibition of somatostatin C) secretion of gastrin D) promotes histamine 8. Gastrin secretion will stop when the stomach pH reaches _____. A) 7.0 B) 4.5 C) 1.5 D) 3.0 9. The alkaline tide occurs when _____ is secreted into the blood. A) HCl B) H+ C) bicarbonate ions D) phosphate ions 10. The _____ duct directly receives the fluids from the gallbladder. A) cystic B) common bile C) hepatic D) common hepatic 11. The common bile duct is formed by the merger of the hepatic and _____ ducts. A) common hepatic B) cystic C) pancreatic D) Santorini 12. The ampulla of Vater is the area that joins the common bile duct to the _____ duct. A) hepatic B) pancreatic C) cystic D) common hepatic 13. Gallbladder stones are medically referred to as a _____ condition. A) cholecystitis B) cholecystectomy C) cholelithiasis D) cholesterol calculi 14. Bile facilitates digestion by causing the _____ of fats. A) hydrolysis B) digestion C) catalysis D) emulsification 15. Bile salts combine with fatty acids to form complexes called _____ that facilitate absorption. A) chylomicrons B) micelles C) globules D) lipoproteins 16. Amylase could be found in all of these areas except which one? A) mouth B) stomach C) duodenum D) pancreas 17. Most of the absorption of nutrients occurs in the _____. A) colon B) duodenum C) jejunum D) ileum 18. Fatty acids and glycerol are released when _____ are broken down by liver or muscle cells. A) micelles B) chylomicrons C) lacteals D) lipoproteins 19. Which of the following is NOT readily absorbed in the small intestine? A) Na+ B) Cl- C) K+ D) Mg2+ 20. The ileocecal valve prevents chyme from entering the _____. A) large intestine B) small intestine C) stomach D) duodenum 21. The frenulum is the membrane attached to the inferior surface of the _____. A) tongue B) stomach C) lips D) liver 22. The following are true of the tongue except which one? A) contains skeletal muscle B) attaches to hyoid bone C) attaches to temporal bone D) contains papillae 23. Which lymphatic areas are most commonly the sites of inflammation? A) Peyer's patches B) palatine tonsils C) lingual tonsils D) adenoids 24. The term wisdom tooth refers to the _____ tooth. A) incisor B) third molar C) second bicuspid D) first cuspid 25. The portion of a tooth which lies within the mandible socket is called the _____. A) dentin B) crown C) root D) cementum 26. Which part of a tooth most closely resembles bone tissue? A) enamel B) cementum C) dentin D) gingiva 27. Which muscles constrict to prevent air from entering the esophagus during breathing? A) superior constrictor B) middle constrictor C) inferior constrictor D) esophageal 28. A hiatal hernia is a weakness in the _____ muscle, which allows a portion of the digestive tract to enter the thoracic cavity. A) diaphragm B) stomach C) intestinal D) thoracic wall 29. The _____ part of the stomach is the area connected to the esophagus. A) cardiac B) pyloric C) fundus D) body 30. The _____ prevents food from entering the small intestine. A) cardiac sphincter B) pyloric valve C) ileo-colic valve D) sphincter of Oddi 31. What is the stimulus for cholecystokinin release? A) chyme B) lipids C) protein D) gastrin 32. What blocks pancreatic secretions from entering the duodenum? A) pyloric valve B) sphincter of Oddi C) the common bile duct D) cholecystokinin secretion 33. Which of the following triggers the formation of the others? A) trypsin B) enterokinase C) carboxypeptidase D) chymotrypsin 34. Proteins are split by all of the following pancreatic factors except which one? A) zymogen B) chymotrypsin C) trypsin D) carboxypeptidase 35. Pancreatitis is mainly the result of _____ activity. A) bile B) bacterial C) carboxypeptidase D) trypsin 36. Which of the following are NOT active in the duodenum? A) nuclease B) enterokinase C) pepsin D) amylase 37. Secretin from the duodenum causes the pancreas to produce secretions rich in _____. A) proteolytic enzymes B) amylase C) lipase D) bicarbonate 38. Which of these is a hormone name? A) trypsin B) ribonuclease C) cholecystokinin D) chymotrypsinogen 39. The hormone which causes the pancreas to secrete an enzyme rich fluid is _____. A) cholecystokinin B) secretin C) enterogastrone D) enterocrinin 40. Which organ has the most metabolically active cells? A) pancreas B) liver C) stomach D) small intestine 41. Ferritin is a globular protein that transports and stores ______ in the liver and blood. A) glycogen B) lipids C) vitamin B12 D) iron 42. Which of the following vitamins is NOT stored in the liver? A) C B) D C) B12 D) A 43. The liver stores ______ for energy. A) nucleic acids B) glycogen C) glucose D) vitamins 44. Which of the following is NOT a function of the adult liver? A) glycogen storage B) detoxification C) synthesis of clotting proteins D) erythropoiesis 45. The liver contains special blood channels termed _____. A) sinusoids B) central vein C) hepatic cells D) portal veins 46. The falciform ligament separates the right from _____ lobe. A) quadrate B) left C) caudate D) pancreatic 47. Which organ produces and secretes bile? A) liver B) gallbladder C) pancreas D) duodenum 48. The Kupffer cells are phagocytic cells found in the _____. A) gallbladder B) pancreas C) intestine D) liver 49. The buildup of bile pigment in tissues that can be caused by gallstones is _____. A) hyperbilirubinemia B) obstructive jaundice C) hepatitis D) hepatocellular jaundice 50. Which of these is a water soluble vitamin? A) D B) C C) E D) K 51. Which of the following acts to inhibit acid production? A) secretin B) somatostatin C) cholecystokinin D) gastrin 52. Which area has the greatest amount of enzyme activity? A) duodenum B) colon C) jejunum D) ileum 53. The shortest section of the intestines is the _____. A) colon B) duodenum C) ileum D) jejunum 54. The membrane that hangs like an apron over the intestines is the _____. A) mesentery B) visceral peritoneum C) parietal peritoneum D) greater omentum 55. The finger-like extensions inside the small intestine are called _____ and increase the surface area. A) microvilli B) villi C) lacteals D) lumens 56. The _____ are vessels that project into the villi and absorb fatty substances. A) lacteals B) lymphatics C) veins D) arteries 57. The following belong together except which one? A) small intestine B) large intestine C) plicae circulares D) crypts of Lieberkuhn 58. Which of these does NOT belong with the others? A) lipase B) sucrase C) maltase D) lactase 59. Which is the only area that can digest a double sugar? A) jejunum B) stomach C) duodenum D) pancreas 60. A peristaltic rush which results in a failure to absorb enough colon water results in _____. A) constipation B) diarrhea C) cramps D) flatus 61. The _____________ layer of the alimentary canal contains loose connective tissue, glands, blood and lymphatic vessels, and nerves. A) mucosa B) submucosa C) muscular layer D) serosa 62. Activities of the digestive system are generally increased by _________________ nervous stimulation. A) sympathetic B) parasympathetic C) somatic D) autonomic 63. The purpose of the soft palate is to __________________. A) house extra taste buds B) sense temperature of food before it is swallowed C) produce saliva and enzymatic secretions D) close off the nasal cavity during swallowing 64. What mouth part helps to mix food with saliva, moves food toward the pharynx for swallowing, and houses taste receptor cells? A) lips B) palate C) tongue D) cheeks 65. Which salivary glands produce the most viscous saliva with lots of mucus? A) sublingual glands B) submandibular glands C) parotid glands D) serous cells 66. What initiates the swallowing reflex? A) fear of choking on food B) the tongue rolling the bolus to the pharynx C) sensory receptors detecting the bolus in the pharynx D) secretion of saliva at the thought of food 67. The main part of the stomach is the _______________ of the stomach. A) cardiac region B) fundic region C) body D) pyloric region 68. Intrinsic factor is secreted by which cells of the gastric glands? A) mucous cells B) chief cells C) peptic cells D) parietal cells 69. During which stage of gastric secretion do gastric glands actually begin secreting gastric juice? A) cephalic phase B) gastric phase C) intestinal phase D) enterogastric reflex 70. The pancreas secretes enzymes that enter the small intestine and chemically digest chyme. Choose the enzyme(s) that break(s) down fats. A) carboxypeptidase B) pancreatic lipase C) trypsinogen D) pancreatic amylase 71. What hormone does the small intestine release in response to acidic chyme? A) cholecystokinin B) secretin C) digestin D) gastrin 72. What is the primary purpose of the liver in aiding digestion? A) produces digestive enzymes B) produces alkaline solution to neutralize stomach acidity C) produces bile to emulsify fats in the small intestine D) produces substances that aid the large intestine in water absorption 73.
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