0% (0 out of 64 correct)
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WRONG1. The wavelike, rhythmic contractions that move food through the digestive tract are called
O A. deglutition
C B. peristalsis
O C. mucosal contractions
O D. absorption



WRONG2. Which peritoneal modification supports the large intestine?
O A. dorsal mesentery
O B. falciform ligament
O C. lesser omentum
C D. mesocolon



WRONG3. The pyloric sphincter is found between the
O A. duodenum and jejunum
O B. ileum and cecum
O C. stomach and esophagus
C D. stomach and duodenum



WRONG4. The pancreas is stimulated to release its secretions by
O A. gastrin
O B. HCl in chyme
C C. secretin
O D. trypsinogen



WRONG5. Which of the following are part of the digestive system, but are not part of the alimentary canal?
O A. duodenum, jejunum, ileum
O B. stomach, esophagus, pharynx
C C. liver, pancreas, gallbladder
O D. mouth, pharynx, rectum



WRONG6. The physical and chemical breakdown of food is completed primarily in the
O A. large intestine
O B. stomach
C C. small intestine
O D. cecum



WRONG7. Gastric glands increase their secretory activity in response to a hormone released from the
O A. duodenum
C B. stomach
O C. pancreas
O D. liver



WRONG8. The space between the parietal and visceral peritoneum is the _____ cavity.
O A. antiperitoneal
O B. mediastinal
O C. retroperitoneal
C D. peritoneal



WRONG9. Connective tissue of the mucosa is called the
O A. muscularis mucosae
O B. rugae
C C. lamina propria
O D. myenteric plexus



WRONG10. The intrinsic factor is produced by _____ cells of the gastric glands.
O A. goblet
C B. parietal
O C. G
O D. chief



WRONG11. The esophageal hiatus is in the
O A. esophagus
O B. cardiac portion of the stomach
O C. mesentery
C D. diaphragm



WRONG12. Digestion begins in the
O A. stomach
C B. mouth
O C. jejunum
O D. esophagus



WRONG13. Taste buds are found in elevations on the dorsal surface of the tongue called
C A. papillae
O B. emetics
O C. Peyer's patches
O D. plicae circularis



WRONG14. Which of the following adult structures is derived from the umbilical vein of the fetus?
C A. ligamentum teres
O B. coronary ligament
O C. portal vein
O D. superior mesenteric vein



WRONG15. Deamination results in the formation of
O A. amino acids
O B. fatty acids and glycerol
O C. monosaccharides
C D. ammonia



WRONG16. Absorption of nutrients occurs primarily in the
O A. stomach
C B. small intestine
O C. colon
O D. pancreas



WRONG17. The myenteric plexus is located in which layer of the alimentary canal?
O A. mucosa
O B. serosa
O C. lamina propria
C D. muscularis



WRONG18. Which hormone is released in response to the presence of fats in the duodenum and has its target cells in the gallbladder?
C A. cholecystokinin
O B. gastrin
O C. enterokinase
O D. secretin



WRONG19. The crypts of Lieberkuhn are
O A. gastric pits
O B. filled with lymph nodes
C C. intestinal glands
O D. mucous glands



WRONG20. The nerve plexus that controls secretions by the gastrointestinal tract is located in the
O A. mucosa
C B. submucosa
O C. muscularis
O D. serosa



WRONG21. The inner surface of each lip is attached to the gum by a midline fold of mucous membrane called the
O A. labia
O B. fauces
O C. vermilion
C D. labial frenulum



WRONG22. Mumps is a viral infection, inflammation, and enlargement of the
O A. lingual tonsils
C B. parotid salivary glands
O C. tongue and throat
O D. uvula and soft palate of the mouth



WRONG23. The duct of the parotid gland enters the mouth cavity near the
C A. second maxillary molar
O B. lingual frenulum
O C. base of the tongue
O D. floor of the mouth



WRONG24. Secretion of saliva decreases
O A. immediately after food is swallowed
O B. when food is tasted
O C. when we see or smell food
C D. when the body is dehydrated



WRONG25. The deciduous molars (baby teeth molars) are replaced in the adult by the
O A. incisors
C B. premolars
O C. cuspids
O D. molars



WRONG26. Salivary amylase digestive activity
O A. occurs only in the mouth while the food is being chewed
O B. continues until the food is swallowed, then it is halted by esophageal secretions
O C. stops as soon as it arrives in the stomach
C D. continues in the stomach until the stomach acids deactivate it



WRONG27. During the act of deglutition
O A. deciduous teeth are replaced by permanent ones
O B. salivary glands are stimulated to secrete more saliva
C C. food moves from the mouth to the stomach
O D. food is thoroughly mixed with saliva by action of the tongue and teeth



WRONG28. What are rugae?
O A. folds of the serosa of the stomach
O B. folds of the mucosa of the small intestine
O C. folds of the peritoneum that attach to the greater and lesser curvatures of the stomach
C D. folds of the mucosa of the stomach



WRONG29. The passage of a bolus of semi-solid food from the mouth to the stomach takes about
O A. 1/2 second
C B. 4-8 seconds
O C. 30 seconds
O D. 1 minute



WRONG30. The inner lining of the stomach is made up of
C A. simple columnar epithelium
O B. simple squamous epithelium
O C. stratified squamous epithelium
O D. pseudostratified ciliated columnar epithelium



WRONG31. Hydrochloric acid is produced in the stomach by the
O A. mucous surface cells
O B. goblet cells
O C. chief cells
C D. parietal cells



WRONG32. The thought or smell of food initiates the _____ phase of stomach secretion and motility.
C A. cephalic
O B. buccal
O C. gastric
O D. intestinal



WRONG33. During the intestinal phase of gastric digestion
O A. gastric secretions and motility increase
O B. gastric motility increases, but gastric secretions decrease
O C. gastric motility decreases, but gastric secretions increase
C D. gastric secretions and motility decrease



WRONG34. Secretion of gastrin and stimulation of the vagus nerve cause
O A. decreased stomach motility, relaxation of the esophageal sphincter, and contraction of the pyloric sphincter
O B. increased secretion of secretin, inhibition of the smooth muscles of the stomach, and contraction of the pyloric sphincter
C C. increased stomach motility, contraction of the esophageal sphincter, and relaxation of the pyloric sphincter
O D. decreased secretion of hydrogen ions, inhibition of pepsin secretion, and relaxation of the esophageal muscles



WRONG35. The ducts of the pancreas and liver connect to the digestive tract at the
O A. pylorus of the stomach
C B. duodenum
O C. jejunum
O D. ileum



WRONG36. Trypsin and chymotrypsin are enzymes of the pancreatic juice that act on
C A. proteins
O B. fats
O C. carbohydrates
O D. DNA and RNA



WRONG37. Pepsin action ceases in the duodenum because of the presence of
O A. enterokinase enzyme, secreted by the duodenum
O B. bile pigments from the liver
C C. bicarbonate ions from the pancreas
O D. secretin hormone from the duodenum



WRONG38. The only substance in bile that aids in digestion is
O A. bilirubin
C B. bile salts
O C. secretin
O D. lipase



WRONG39. The hormone that causes contraction of the muscles in the wall of the gallbladder and relaxation of the sphincter of the hepatopancreatic ampulla (sphincter of Oddi) is
O A. secretin
C B. cholecystokinin
O C. gastrin
O D. enterokinase



WRONG40. The cystic duct is attached to the
C A. gallbladder
O B. pancreas
O C. liver
O D. duodenum



WRONG41. The finger-like projections of the small intestine that give the mucosa a velvety appearance and greatly increase the surface area are called
O A. circular folds
C B. villi
O C. microvilli
O D. haustra



WRONG42. Most carbohydrate digestion takes place in the
O A. mouth
O B. stomach
C C. small intestine
O D. large intestine



WRONG43. There are no lipase enzymes secreted by the gland cells of the
O A. mouth
O B. stomach
O C. pancreas
C D. small intestine



WRONG44. All lipids are absorbed through the brush border of the small intestine by the process of
O A. facilitated diffusion
C B. simple diffusion
O C. active transport
O D. pinocytosis



WRONG45. Although over 9 liters of water enter the small intestine, the amount lost in the feces is only about
C A. 0.1 liter
O B. 1 liter
O C. 2 liters
O D. 3 liters



WRONG46. Which digestive gland secretes the most fluid into the digestive tract?
O A. salivary glands
O B. liver
C C. pancreas
O D. Brunner's glands



WRONG47. Which two regions of the large intestine are retroperitoneal?
O A. ascending colon and sigmoid colon
O B. descending colon and sigmoid colon
C C. ascending colon and descending colon
O D. transverse colon and sigmoid colon



WRONG48. Tubular glands formed by simple columnar epithelium and goblet cells that extend the full thickness of the mucosa are found in the
O A. esophagus
O B. stomach
O C. liver
C D. large intestine



WRONG49. Which of the following is NOT a function of hepatocytes?
C A. secretion of digestive enzymes
O B. secretion of bile
O C. detoxifying alcohol
O D. synthesizing cholesterol



WRONG50. In the embryo, the inner lining of most of the digestive tract is formed from
O A. ectoderm
O B. mesoderm
C C. endoderm
O D. mesenchyme



WRONG51. Dentists recommend that plaque be removed from the teeth at least every
C A. 24 hours
O B. week
O C. month
O D. 6 months



WRONG52. The second leading cause of cancer deaths in males, after deaths from lung cancer, is
O A. pancreatic cancer
C B. colorectal cancer
O C. cancer of the mouth and tongue
O D. stomach cancer



WRONG53. Gallstones are formed from the fusion of crystallized
C A. cholesterol
O B. bile salts
O C. bilirubin
O D. sodium chloride



WRONG54. The branch of dentistry that is concerned with the prevention and correction of abnormally aligned teeth is
O A. endodontics
C B. orthodontics
O C. peridontics
O D. paradontics



TEXT55. The process of taking foods and liquids into the mouth is called eating or _______.

YOUR ANSWER:

The suggested answer is ingestion



TEXT56. The epithelium lining the mouth, esophagus and anal canal is _______.

YOUR ANSWER:

The suggested answer is stratified squamous epithelium



TEXT57. An acute inflammation of the peritoneum is called _______.

YOUR ANSWER:

The suggested answer is peritonitis



TEXT58. Liver bile is stored in the _______.

YOUR ANSWER:

The suggested answer is gall bladder



TEXT59. The stomach wall has _______ layers of smooth muscle in the muscularis.

YOUR ANSWER:

The suggested answer is three



TEXT60. The liver receives blood from the hepatic artery and from the _______.

YOUR ANSWER:

The suggested answer is hepatic portal vein



TEXT61. The reabsorption of bile salts in the ileum and resecretion into liver bile is called the _______.

YOUR ANSWER:

The suggested answer is enterohepatic circulation



TEXT62. The three structures of the portal triad are branches of the _______, _______, and _______.

YOUR ANSWER:

The suggested answer is hepatic portal vein, hepatic artery and bile duct



TEXT63. The exocrine portion of the pancreas is composed of small clusters of glandular epithelial cells called _______.

YOUR ANSWER:

The suggested answer is acini



TEXT64. The brush border enzyme _______ hydrolyzes sucrose.

YOUR ANSWER:

The suggested answer is sucrase



WRONG65. The soft palate and uvula close off the nasopharynx during swallowing to prevent food from entering the nasal cavity.
C A. True
O B. False



WRONG66. Chyme is produced by the digestive processes in the mouth.
O A. True
C B. False



WRONG67. The microvilli of the small intestine contain brush border enzymes.
C A. True
O B. False



WRONG68. Salivary glands are exocrine glands.
C A. True
O B. False



WRONG69. The pancreatic islets produce insulin and glucagon.
C A. True
O B. False



WRONG70. The liver has large endothelium-lined spaces called sinusoids instead of capillaries.
C A. True
O B. False



WRONG71. When feces stay in the colon for prolonged periods, diarrhea results.
O A. True
C B. False



WRONG72. The appendix is in the right lower quadrant of the abdomen.
C A. True
O B. False



WRONG73. Chylomicrons enter the blood capillaries of the small intestine.
O A. True
C B. False



WRONG74. Pancreatic lipase hydrolyzes triglycerides into fatty acids and monoglycerides.
C A. True
O B. False



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