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Digestive System Multiple Choice, Chapter 23 Besaw

front 1 In order to prevent self-digestion of the pancreas, activation of pancreatic proteases occurs in the __________.	back 1 The pancreatic duct empties into the duodenum, where activation of proteases occurs. This process occurs to prevent self-digestion of the pancreas.
front 2 During deglutition, the bolus passes into the stomach from the esophagus through the __________.	back 2 gastroesophageal sphincter The gastroesophageal sphincter is the junction between stomach (gastro) and esophagus. A loose gastroesophageal sphincter can cause heartburn or acid reflux.
front 3 During the intestinal phase of gastric regulation, __________.	back 3 the stomach is initially stimulated and later inhibited The stomach is initially stimulated and later inhibited.
front 4 Protective collections of lymphocytes and macrophages are found in __________.	back 4 Peyer's patches, which contain lymphocytes and macrophages, increase in number toward the end of the ileum.

front 5 What is the main organic molecule digested in the stomach?	back 5 proteins The only enzyme produced by the stomach is pepsin, which digests protein.
front 6 The propulsive function that occurs in the esophagus is called __________.	back 6 peristalsis Peristalsis occurs as a wave of contraction
front 7 Which of the following is a characteristic of the large intestine?	back 7 It contains a large number of bacteria. The large intestine contains a large number of bacteria. E. coli is the primary bacterial species in the colon.
front 8 Which regulatory chemical stimulates gastric gland activity and motility?	back 8 gastrin Gastrin is the major stomach hormone. Both the stomach and the small intestine produce this chemical.

front 9 Which sequence below represents the correct layering of the wall of the GI tract, starting from the layer next to the lumen?	back 9 mucosa, submucosa, muscularis externa, serosa The mucosa is the layer that lines the lumen. The submucosa is under it.
front 10 What substances from different organs would mix together at the hepatopancreatic ampulla?	back 10 bile and pancreatic enzymes Bile and pancreatic enzymes mix at the hepatopancreatic ampulla.
front 11 What would be the effect of stripping the small intestines of their villi?	back 11 Decreased surface area for absorption would cause weight loss to occur. Decreased intestinal surface area would lead to decreased absorption, leading to a long list of problems such as malnutrition, dehydration, diarrhea, and electrolyte imbalance
front 12 Which of the following products does the stomach produce?	back 12 HCl and intrinsic factor HCl, IF, mucous, and pepsinogen (pepsin) are products of the stomach.

front 13 The final product of carbohydrate digestion is __________.	back 13 monosaccharides All macromolecules are broken down to their monomers, except fatty acids.
front 14 Which of the following cells produce HCl?	back 14 Parietal cells make HCl and intrinsic factor.
front 15 Which of the following cells produce pepsinogen?	back 15 Chief cells are the enzyme-producing cells.
front 16 The digestive system in a cadaver is longer than in a living person because, in a cadaver, there is NO __________.	back 16 muscle tone The digestive system in a cadaver is longer than that in a living person because there is no muscle tone in a cadaver.

front 17 __________ is the major means of propulsion in the digestive system.	back 17 Peristalsis Peristalsis is the major means of propulsion in the digestive system.
front 18 The short reflexes in the digestive system are stimulated by __________.	back 18 the enteric nerve plexuses The enteric nerve plexuses stimulate the short reflexes in the digestive system.
front 19 Which of the following is the most common cause of peritonitis?	back 19 a burst appendix A burst appendix is the most common cause of peritonitis.
front 20 The myxovirus causes __________.	back 20 mumps The myxovirus causes mumps.

front 21 Halitosis is caused by __________.	back 21 increased activity of anaerobic bacterial activity at the back of the tongue Halitosis is caused by increased activity of anaerobic bacterial activity at the back of the tongue.
front 22 Which of the following teeth are most commonly impacted?	back 22 wisdom teeth Wisdom teeth are the most common teeth to become impacted.
front 23 Which of the following conditions is directly associated with an increased risk for heart disease and stroke?	back 23 periodontitis Periodontitis is associated with an increased risk for heart disease or stroke.
front 24 The only stomach function that is essential to life is __________.	back 24 the secretion of intrinsic factor The secretion of intrinsic factor is the only stomach function that is essential to life.

front 25 Some aspects of the __________ phase of gastric secretion may be considered conditioned reflexes.	back 25 Some aspects of the cephalic phase of gastric secretion may be considered conditioned reflexes
front 26 Hollow muscular organs, like the stomach, that act as reservoirs exhibit __________.	back 26 plasticity Hollow muscular organs, like the stomach, that act as reservoirs exhibit plasticity, which is the intrinsic ability of visceral smooth muscle to exhibit the stress-relaxation response.
front 27 Many of the early food allergies seen in infants are caused by __________.	back 27 absorption of whole proteins Absorption of whole proteins, which stimulates an immune response, is the cause of many early life food allergies.
front 28 Which of the following is a condition that affects the large intestine that is NOT explained by anatomical or biochemical abnormalities?	back 28 irritable bowel syndrome Irritable bowel syndrome is not explained by anatomical or biochemical abnormalities.