Practice+MT+2 - NPB 114 Practice MT#2 Matching (1 pt each)...

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Unformatted text preview: NPB 114 Practice MT#2 Matching (1 pt each) a. Acinar cell b. Endocrine cell c. Parietal cell d. Chief cell e. Mucous cell ____ 1. Produces an alkaline fluid to protect the stomach ____ 2. Its product is released into the bloodstream ____ 3. Produces pepsinogen a. Fundus b. Body c. Antrum d. LES e. Pyloric Sphincter ____ 4. Stretchy upper portion of the stomach that accomodates food ____ 5. Separates the duodenum from the stomach Multiple Choice (3 pts each) ____ 6. All phases of swallowing are initiated involuntarily, EXCEPT for the ______ phase. a. Oral b. Pharyngeal c. Esophageal ____ 7. What can increase the force of contraction in the esophagus? a. b. c. d. e. ____ Cold in the esophagus Stretch in the esophageal smooth muscle Stimulation of tongue touch receptors Vagotomy Two of the above increase the force of contraction 8. Contraction of the _____________ closes off the nasopharynx during swallowing. a. Lips b. Upper esophageal sphincter c. Levitators ____ d. Gastric e. None of the above d. Inner pharyngeal set e. Outer pharyngeal set 9. If the nasopharynx were physically blocked, what would be the consequence? a. b. c. d. e. Air will be directed into the esophagus, not the trachea We could NOT taste food Swallowing could NOT occur We could not breathe through the nose Two of the above would be consequences ____ 10. A toxin inhibits myosin light chain kinase. In humans, what region will be affected by the toxin? a. The stomach b. The tongue c. The oropharynx d. The upper 1/3 of the esophagus e. The diaphragm ____ 11. Suppose that a very long lag phase was observed following ingestion of food items. What could be the reason? a. b. c. d. e. The food items are a liquid The food items are large in diameter The consumer had a vagotomy The food items contain zero calories Two of the above are correct answers to this question. ____ 12. You measured an intragastric pressure of 9-10 mm Hg in the proximal stomach of your patient. What might be causing this pressure? a. b. c. d. e. The antrum just relaxed Deglutative inhibition The patient has just swallowed a food load The patient had a vagotomy The gastric smooth muscle membrane potential is -45 mV ____ 13. What sensory modality is NOT detected by stomach afferents? a. b. c. d. e. pH Temperature Pain Muscle stretch All of the above ARE detected by stomach afferents ____ 14. Which of the following gastric secretion is protective? a. Mucus b. Pepsinogen c. HCl d. Intrinsic factor e. Hormones ____ 15. In a stimulated parietal cell... a. b. c. d. Proton pumps translocate to the membrane facing the bloodstream Protons move from the blood into the parietal cell The secretion is referred to as the "non-parietal secretion" Protons leave the cell via a H+/K+ pump ____ 16. Which relationship is TRUE? a. b. c. d. size of swallowed food bolus duration that oropharynx is closed caloric content of stomach contents gastric emptying rate [H+] in stomach contents gastric emptying rate stretch of stomach wall due to food load LES tone ____ 17. Your patient complains of significant dental erosion while he sleeps and a burning sensation in his chest following a fat-rich meal. You advise him that the symptoms may predispose him to develop... a. Scleroderma b. Chagas' Disease c. Achalasia d. Reflux disease ____ 18. Which is NOT a feature of the fed motor activity of the stomach? a. b. c. d. e. A peristaltic wave that begins in the body and travels toward the pyloric sphincter The contractions are phasic and intense The pyloric sphincter is wide open Retropulsion Pyloric pumping ____ 19. Acid reflux into the esophagus has NOT be associated with... a. Wearing loose clothing b. Heavy lifting c. Chocolate d. Coffee e. Alcohol ____ 20. Rapid stomach emptying may be caused by... a. Pancreatic insufficiency b. L-tryptophan c. Type I diabetes d. Idiopathic gastroparesis e. GERD ____ 21. LES tone increases during respiratory inspiration because .... a. b. c. d. The contraction is a type of mechanical digestion It prevents reflux of stomach contents You cannot swallow and breathe simultaneously It prevents air from entering the esophagus ____ 22. The fed activity may be stimulated by... a. Proximal stomach stretch b. Fats in the duodenum c. Motilin d. Vagotomy e. Duodenal stretch ____ 23. The pyloric sphincter opens in response to... a. Motilin b. Acid in the duodenum c. Meal ingestion d. CCK e. Fat in the duodenum ____ 24. Which phase of the MMC exhibits strong rhythmic contractions? a. Phase I b. Phase II c. Phase III d. All phases e. None of the phases ____ 25. The MMC can be inhibited by... a. Fasting b. Proximal stomach distension c. Motilin d. Duodenal distension e. Pyloric sphincter opening ____ 26. Which of the following events prevents food from entering the respiratory passages during swallowing? a. Peristalsis in the oropharnx b. Opening of the UES c. Closure of the LES d. Closure of the larynx e. Opening of the epiglottis ____ 27. The type of muscle that is completely seen in the stomach is... a. The longitudinal muscle layer b. The skeletal muscle layer c. The oblique muscle layer d. The circular muscle layer e. The cardiac muscle layer ____ 28. Which reaction requires ATP use in parietal cells? a. b. c. d. Movement of H+ across the apical membrane Movement of water across the cell Production of H+ from CO2 and H2 0 Production of HCO3.- ____ 29. Which gastric secretion component decreases in concentration at high versus low secretory rates? a. H + b. N a+ c. K + d . C l- ____ 30. A disease causes smooth muscle degeneration. What may be observed in a patient with this disease? a. b. c. d. An inability to chew Peristalsis in the upper 1/3 of the esophagus No peristalsis in the tongue An inability to close the soft palate ____ 31. Which statement is FALSE? a. b. c. d. e. Generally, the esophagus is longer in males The UES is controlled via vagal pathways Gastric accommodation opens the LES The fed activity of the stomach involves peristalsis in the antrum During fasting, the orad stomach muscle cells are at approx -45 mV NPB 114 Practice MT#2 Answer Section MATCHING 1. ANS: E 2. ANS: B 3. ANS: D 4. ANS: A 5. ANS: E MULTIPLE CHOICE 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: A B C D A B C E A D B D C A A B A A C B D D A B B C ...
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