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30 Cards in this Set
- Front
- Back
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Which of the following enzymes acts in the stomach?
a. chymotrypsin b. lingual lipase c. carboxypeptidase d. enterokinase e. dextrinase |
lingual lipase
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Which of the following enzymes does not digest any nutrients?
a. chymotrypsin b. lingual lipase c. carboxypeptidase d. enterokinase e. dextrinase |
enterokinase
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Which of the following is not an enzyme?
a. chymotrypsin b. enterokinase c. secretin d. pepsin e. nucleosidase |
secretin
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The substance in question 3 that is not an enzyme is
a. a zymogen b. a nutrient c. an emulsifier d. a neurotransmitter e. a hormone |
a hormone
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The lacteals absorb
a. chylomicrons b. micelles c. emulsification droplets d. amino acids e. monosaccharides |
chylomicrons
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All of the following contribute to the absorptive surface area of the small intestine except
a. its length b. the brush border c. haustra d. circular folds e. villi |
haustra
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Which of the following is a periodontal tissue?
a. the gingiva b. the enamel c. the cementum d. the pulp e. the dentin |
the gingiva
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The______of the stomach most closely resemble the_______of the small intestine.
a. gastric pits, intestinal crypts b. pyloric glands, intestinal crypts c. rugae, peyer patches d. parietal cells, goblet cells e. gastric glands, duodenal glands |
gastric pits, intestinal crypts
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Which of the following cells secrete digestive enzymes?
a. chief cells b. mucous neck cells c. parietal cells d. goblet cells e. enteroendocrine cells |
chief cells
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What phase of gastric regulation includes inhibition by the enterogastric reflex?
a. the intestinal phase b. the gastric phase c. the buccal phase d. the cephalic phase e. the pharyngo-esophageal phase |
the intestinal phase
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Cusps are a feature of the______surfaces of the molars and premolars.
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occlusal
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The acidity of the stomach deactivates_______but activates_____of the saliva.
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amylase, lypase
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The_____salivary gland is named for its proximity to the ear.
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parotid
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The submucosal and myenteric nerve plexuses collectively constitute the______nervous system.
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enteric
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Nervous stimulation of gastrointestinal activity is mediated mainly through the parasympathetic fibers of the _______nerves.
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vagus
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Food in the stomach causes G cells to secrete______which in turn stimulates the secretion of HCl and pepsinogen.
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gastrin
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Hepatic macrophages occur in blood-filled spaces of the liver called_____.
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sinusoids
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The brush border enzyme that finishes the job of starch digestion, producing glucose, is called______. Its substrate is________.
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maltase, maltose.
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Fats are transported in the lymph and blood in the form of droplets called________.
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chylomicrons
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Within the absorptive cells of the small intestine, ferritin binds the nutrient_____.
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iron
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T/F Fat is not digested until it reaches the duodenum.
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False, Fat digestion begins in stomach.
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T/F A tooth is composed mostly of enamel.
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False, Most of the tooth is dentin.
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T/F Hepatocytes secrete bile into the hepatic sinusoids.
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False, hepatocytes secrete bile into the bile canaliculi.
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T/F Cholecystokinin stimulates the release of bile into the duodenum.
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True
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T/F Peristalsis is controlled by the myenteric nerve plexus.
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True
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T/F Pepsinogen, trypsinogen, and procarboxypeptidase are enzymatically inactive zymogens.
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True
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T/F The absorption of dietary iron depends on intrinsic factor.
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False, Intrinsic factor is involved with absorption of Vitamin B12.
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T/F Filling of the stomach stimulates contractions of the colon.
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True
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T/F The duodenum secretes a hormone that inhibits contractions of the stomach.
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True
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T/F Tight junctions of the small intestine prevent anything from leaking between the epithelial cells.
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False, Water, glucose and other nutrients pass inbetween cells through tight junctions.
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