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ysiology / Gastrointestinal Phy
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siology Test Bank QUESTIONS
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AND CORRECT DETAILED ANS
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WERS WITH RATIONALES (VE
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RIFIED ANSWERS) |ALREADY
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GRADED A+ d
,A 2-year-
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old boy swallows a penny. The boy's mother checks his stool for s
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everal days, but the
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penny does not appear. Meanwhile, the boy has lost his appeti
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te and seems to have difficulty
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eating. When a foreign object is swallowed, it often lodges at whi
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ch portion of the gut?
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A. Anus
B. Duodenum
C. Ileocecal sphincter d
D. Lower esophageal sphincter d d
E. Pharynx
F. Pyloric sphincter d
G. Rectum - CORRECT ANSWER- d d d
D. Lower esophageal sphincter
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A22-year-
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old man is fed intravenously for several weeks following a seve
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re automobile
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accident. The intravenous feeding leads toatrophy of the gastr
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ointestinal mucosa most likely d d d
because the blood level of which of the following hormones is
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reduced?
,A. Cholecystokinin only d
B. Gastrin only
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C. Secretin only
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D. Gastrin and cholecystokinin
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E. Gastrin and secretin
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F. Secretin and cholecystokinin - CORRECT ANSWER-
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B. Gastrin only
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, A 23-year-
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old man consumes a meal containing a large amount of fat. At
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which of the following
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locations are bile salts most likely to be absorbed?
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A. A
B. B
C. C
D. D - CORRECT ANSWER-D. D
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A24-year-
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old male graduate student participates in a clinical rese
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arch study on intestinal
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motility. Peristalsis of the small intestine
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A. Involves contraction of smooth muscle behind the food b
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olus and relaxation of smooth
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muscle in front of the bolus
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B. Mixes the food bolus d d d
C. Is coordinated by the central nervous system (CNS)
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D. Involves contraction of smooth muscle behind and in fr
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ont of the food bolus
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E. Involves relaxation of smooth muscle simultaneously t
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hroughout the small intestine - CORRECT ANSWER-A.
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