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40 Cards in this Set
- Front
- Back
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Each of the following organs is a component of the digestive tract, except the
a. stomach b. pharynx c. colon d. pancreas |
d. pancreas
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Which of the following is an accessory organ of digestion?
a. stomach b. liver c. esophagus d. duodenum |
b. liver
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Digestion refers to
a. progressive dehydration of indigestible residue b. input of food into the digestive tract c. chemical breakdown of food d. absorption of nutrients in the gut |
c. chemical breakdown of food
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The lamina propria and mucous epithelium are components of the
a. serosa b. adventicia c. mucosa d. submucosa |
c. mucosa
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The myenteric plexus is
a. a layer of circular smooth muscle b. a layer of longitudinal smooth muscle c. a network of neurons d. the mucus secreting layer of the digestive tract |
c. a network of neurons
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Contraction of the _______ alters the shape of the intestinal lumen and moves epithelial pleats and folds
a. mucosa b. submucosa c. muscularis mucosa d. adventicia |
c. muscularis mucosa
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The ______ are double sheets of peritoneal membrane that hold some of the visceral organs in their proper position.
a. serosa b. adventicia c. mesenteries d. fibrosa |
c. mesenteries
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Most of the digestive tract is lined by _______ epithelium.
a. pseudostratified ciliated columnar b. cuboidal c. simple columnar d. stratified squamous |
c. simple columnar
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A modification of the digestive epithelium that allows expansion of the organ is the presence of
a. flat surfaces b. mucous glands c. ciliated columnar cells d. folds or pleats |
d. folds or pleats
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Waves of muscular contractions that propel the contents of the digestive tract from one point to another are called
a. segmentation b. pendular movements c. peristalsis d. mastication |
c. peristalsis
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Powerful peristaltic contractions that occur a few times each day in the colon are called
a. segmentation b. haustral churning c. defecation d. mass movements |
d. mass movements
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The activities of the digestive system are regulated by
a. hormones b. parasympathetic and sympathetic neurons c. the contents of the digestive tract d. all of the above |
d. all of the above
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The functions of the oral cavity include all of the following, except
a. analysis of material before swallowing b. mechanical processing of food c. digestion of carbohydrates d. all of the above are functions of the oral cavity |
d. all of the above are functions of the oral cavity
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The bulk of each tooth consists of a mineralized matrix similar to that of bone called
a. enamel b. cementum c. dentin d. pulp |
c. dentin
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The crown of a tooth is covered by
a. enamel b. cementum c. dentin d. pulp |
a. enamel
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Which of the following is false about secretions from the salivary glands?
a. are mostly water b. help to lubricate the oral cavity and its contents c. contain enzymes for the digestion of simple sugars d. help to control bacterial populations in the mouth |
c. contain enzymes for the digestion of simple sugars
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The esophagus
a. extends from the oral cavity to the stomach b. is a muscular tube c. functions in the digestion of carbohydrates d. has a thick lining that will tolerate stomach acid |
b. is a muscular tube
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Functions of the stomach include all of the following, except
a. storage of ingested food b. initiation of protein digestion c. absorption of dipeptides d. mechanical breakdown of food |
c. absorption of dipeptides
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Parietal cells secrete
a. pepsinogen b. gastrin c. mucus d. hydrochloric acid |
d. hydrochloric acid
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Chief cells secrete
a. pepsinogen b. gastrin c. mucus d. hydrochloric acid |
a. pepsinogen
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Enteroendocrine cells of the stomach secrete
a. cholecystokinin b. secretin c. gastrin d. pepsin |
c. gastrin
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The portion of the stomach that connects to the esophagus is the
a. fundus b. cardia c. body d. pylorus |
b. cardia
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The prominent ridges in the lining of the stomach are called
a. cardia b. papillae c. rugae d. villi |
c. rugae
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Gastric pits are
a. ridges in the body of the stomach b. involved in absorption of liquids from the stomach c. pockets in the lining of the stomach that contain secretory cells d. located in the esophagus |
c. pockets in the lining of the stomach that contain secretory cells
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The enzyme pepsin digests
a. carbohydrates b. proteins c. lipids d. vitamins |
b. proteins
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Plicae and intestinal villa
a. increase the surface area of the mucosa of the small intestine b. carry products of digestion that will not pass through the walls of blood capillaries c. produce new cells for the mucosa of the small intestine d. secrete digestive enzymes |
a. increase the surface area of the mucosa of the small intestine
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The duodenal ampulla is formed by the fusion of the
a. duodenum and jejunum b. duodenum with the pylorus c. common bile duct and pancreatic duct d. duodenum and the bile duct |
c. common bile duct and pancreatic duct
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Absorptive effectiveness of the small intestine is enhanced by all of the following, except
a. the reduced length b. the microvilli c. intestinal movements d. the villi |
a. the reduced length
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The portion of the small intestine that is attached to the pylorus of the stomach is the
a. ileum b. colon c. jejunum d. duodenum |
d. duodenum
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The portion of the small intestine that attaches to the large intestine is the
a. ileum b. colon c. jejunum d. duodenum |
a. ileum
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An intestinal hormone that stimulates the pancreas to release a watery secretion that is high in bicarbonate ion is
a. enterocrinin b. secretin c. cholecystokinin d. gastrin |
b. secretin
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An intestinal hormone that stimulates the gall bladder to release bile is
a. enterocrinin b. secretin c. cholecystokinin d. gastrin |
c. cholecystokinin
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An intestinal hormone that stimulates the release of insulin from the pancreatic islet cells is
a. GIP (gastric inhibitory peptide) b. secretin c. cholecystokinin d. gastrin |
a. GIP (gastric inhibitory peptide
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The fusion of the hepatic duct and the cystic duct forms the
a. hepatic portal vein b. common bile duct c. common pancreatic duct d. bile canaliculus |
b. common bile duct
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In the center of a liver lobule there is a(n)
a. hepatic duct b. portal area c. central vein d. sinusoid |
c. central vein
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Each of the following is a function of the liver , except
a. synthesis and secretion of bile b. synthesis of plasma proteins c. inactivation of toxins d. antibody production |
d. antibody production
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The pancreas produces
a. lipases and amylase b. nucleases c. peptidases and proteinases d. all of the above |
d. all of the above
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The gastric phase of gastric secretion is triggered by the
a. sight, thought or smell of food b. entry of food into the stomach c. entry of chyme into the small intestine d. entry of chyme into the large intestine |
b. entry of food into the stomach
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Functions of the large intestine include
a. chemical digestion of chyme b. temporary food storage c. absorption of the products of digestion d. reabsorption of water and compaction of feces |
d. reabsorption of water and compaction of feces
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Most products of fat digestion are absorbed by
a. capillaries b. veins c. lymphatic vessels d. the interstitial fluid |
c. lymphatic vessels
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