Exam3 Review Q's 51-101
54.A drug that blocks the action of carbonic anhydrase in parietal cells would result in a.a higher pH in the stomach during gastric digestion. b.increased protein digestion in the stomach. c.a lower pH in the stomach during gastric digestion. d.decreased gastrin production. e.decreased production of pepsinogen by chief cells.
a
55.Mary had her most of her stomach surgically removed in an effort to overcome obesity. As a result you would expect Mary to be at risk for a.vitamin B12 deficiency. b.diarrhea. c.an ulcer. d.protein malnutrition. e.dehydration.
a
68.Submucosal glands that secrete mucus are characteristic of the a.duodenum. b.pancreas. c.jejunum. d.liver. e.ileum.
a
70.The villi are most developed in the a.jejunum. b.cecum. c.duodenum. d.stomach. e.gall bladder.
a
79.An intestinal hormone that stimulates the release of insulin from the pancreatic islet cells is a.gastric inhibitory peptide (GIP). b.secretin. c.cholecystokinin. d.vasoactive intestinal peptide (VIP). e.enteropeptidase.
a
84.Gastrin secretion in response to elevated luminal pH is an example of ________ stimulation. a.local b.neural c.hormone d.muscular e.None of the answers is correct
a
90.The sac-like structure that joins the ileum at the ileocecal valve is the a.cecum. b.sigmoid colon. c.rectum. d.haustra. e.appendix.
a
92.What organ is primarily responsible for water absorption? a.large intestine b.small intestine c.stomach d.esophagus e.anus
a
97.The basic functional unit of the liver is the a.lobule. b.bile canaliculus. c.Kupffer cell. d.portal area. e.hepatocyte.
a
100.Kupffer cells lurk in the liver, searching for invaders. Where in the liver do they lurk? a.perisinusoidal space b.hepatic sinusoids c.lymph vessels d.bile canaliculi e.interlobular septum
b
52.All of the following are true of the lining of the stomach except that it a.has a simple columnar epithelium. b.recycles bile. c.contains gastric pits. d.is covered by thick, alkaline mucus. e.is constantly being replaced.
b
53. Which of the following is greater? a.the pH of the blood in gastric veins following a 24-hour fast b.the pH of the blood in gastric veins during digestion of a large meal c.The pH of the blood in the gastric veins could be greater after a meal or after a fast; there is not enough information to predict. d.The pH of the blood in the gastric veins is constant because of buffering.
b
56. Lacteals a.secrete digestive enzymes. b.carry absorbed fats to the lymphatic system. c.produce new cells for the mucosa of the small intestine. d.increase the surface area of the mucosa of the small intestine. e.produce milk.
b
71.Aggregated lymphoid nodules are characteristic of the a. jejunum. b.ileum. c.duodenum. d.colon. e.stomach.
b
78.An intestinal hormone that stimulates contraction of the gallbladder to release bile is a.gastric inhibitory peptide (GIP). b.cholecystokinin. c.gastrin. d.secretin. e.enteropeptidase.
b
82.The hormone that stimulates secretion and contraction by the stomach is a.secretin. b.gastrin. c.cholecystokinin. d.rennin. e.enteropeptidase.
b
88.Powerful peristaltic contractions that occur a few times each day in the colon are called a.haustral churning. b.mass movements. c.segmentation. d.defecation. e.pendular movements.
b
91.A small, wormlike structure attached to the posteromedial surface of the cecum is the a.ileum. b.appendix. c.pancreas. d.gallbladder. e.haustra.
b
96.Which of the following is not a component of the defecation reflex? a.stimulation of myenteric plexus in sigmoid colon b.contraction of the external anal sphincter c.stimulation of parasympathetic motor neurons in sacral spinal cord d.increased local peristalsis e.stimulation of stretch receptors
b
101.The fusion of the hepatic duct and the cystic duct forms the a.porta hepatis. b.hepatic portal vein. c.common bile duct. d.bile canaliculus. e.common pancreatic duct.
c
51.An enzyme secreted by the gastric mucosa of a newborn that assists in the digestion of milk proteins is a.pepsin. b.gastrin. c.rennin. d.trypsin. e.cholecystokinin
c
72.The middle segment of the small intestine is the a. ileum. b.duodenum. c.jejunum. d.pylorus. e.cecum.
c
73.The portion of the small intestine that attaches to the cecum is the a.haustrum. b.jejunum. c.ileum. d.appendix. e.duodenum.
c
75.G cells of the stomach secrete a. enteropeptidase. b.secretin. c.gastrin. d.pepsin. e.cholecystokinin.
c
85.In response to the arrival of acid chyme in the duodenum, the a.blood levels of vasoactive intestinal peptide (VIP) fall. b.blood levels of gastrin rise and blood levels of vasoactive intestinal peptide (VIP) fall. c.blood levels of secretin rise. d.blood levels of cholecystokinin fall. e.blood levels of gastrin rise.
c
95.The ________ is composed of smooth muscle fibers and is not under voluntary control. a.anal canal b.sigmoid flexure c.internal anal sphincter d.rectum e.external anal sphincter
c
57.Circular folds and intestinal villi a.produce hormones. b.carry products of digestion that will not pass through the walls of blood capillaries. c.secrete digestive enzymes. d.increase the surface area of the mucosa of the small intestine. e.produce new cells for the mucosa of the small intestine
d
58.Circular folds are a.fingerlike projections on the surface of the mucosa of the small intestine. b.ridges in the wall of the stomach. c.ridges on the external edges of the colon. d.circumferential folds in the mucosa and submucosa of the small intestine. e.abnormal structures formed by excessive pressure in the small intestine.
d
60.Products of fat digestion are transported initially by a.veins. b.the arterioles. c.capillaries. d.lacteals. e.the interstitial fluid.
d
69.Duodenal glands are characteristic of the a. stomach. b.large intestine. c.liver. d.small intestine. e.pancreas.
d
74.The part of the digestive tract that plays the primary role in chemical digestion and nutrient absorption is the a. cecum. b.duodenum. c.stomach. d.jejunum. e.colon.
d
76.An intestinal hormone that stimulates mucus secretion by the submucosal duodenal glands and dilation of intestinal capillaries is a. cholecystokinin. b.gastrin. c.gastric inhibitory peptide (GIP). d.vasoactive intestinal peptide (VIP). e.secretin.
d
77.The intestinal hormone that stimulates the pancreas to release enzymes and buffers is a.vasoactive intestinal peptide (VIP). b.gastric inhibitory peptide (GIP). c.gastrin. d.secretin. e.lipase.
d
80.An intestinal hormone that stimulates gastric secretion is a.secretin. b.cholecystokinin. c.enteropeptidase. d.gastrin. e.gastric inhibitory peptide (GIP).
d
81.Which of these descriptions best matches the term gastrin? a.where pancreatic juice and bile enter duodenum b.carries absorbed sugars and amino acids c.stimulates pancreas to secrete bicarbonate-rich fluid d.stimulates gastric secretion e.causes gall bladder to contract
d
86.A drug that blocks the action of the hormone cholecystokinin would affect a.the composition of pancreatic secretions. b.the delivery of bile. c.acid production by the stomach. d.All of the answers are correct. e.None of the answers is correct.
d
94.Functions of the large intestine include a.storage of fecal material prior to defection. b.reabsorption of water and compaction of feces. c.absorption of vitamins. d.All of the answers are correct. e.None of the answers is correct.
d
59.Which of the following enhance the absorptive effectiveness of the small intestine? a.circular folds b.microvilli c.intestinal movements d.villi e.All of the answers are correct.
e
83.Which of the following descriptions best matches the term cholecystokinin (CCK)? a. stimulates gastric secretion b.carries absorbed sugars and amino acids c.where pancreatic juice and bile enter duodenum d.stimulates pancreas to secrete insulin e.causes gall bladder to contract
e
87.Which organ is responsible for dehydration and compaction of indigestible materials? a.anus b.small intestine c.esophagus d.stomach e.large intestine
e
89.Haustra are a.compact feces stored in the rectum. b.glands in the large intestine that secrete mucus. c.strips of muscle in the colon. d.the source of colon hormones. e.expansible pouches of the colon.
e
93.Movements unique to the large intestine are ________ movements. a.segmentation b.pendular c.peristaltic d.writhing e.mass
e
98.________ are arranged within a lobule of the liver into a series of plates converging toward a central vein. a.Bile canaliculi b.Hepatic ducts c.Kupffer cells d.Portal areas e.Hepatocytes
e
99.The Kupffer cells of the liver a.present antigens. b.are phagocytic. c.destroy bacteria. d.destroy damaged RBCs. e.All of the answers are correct.
e
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