GI Practice Exam

GI Practice Exam - PHYSIOLOGY 601 PRACTICE QUESTIONS...

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PHYSIOLOGY 601 PRACTICE QUESTIONS GASTROINTESTINAL PHYSIOLOGY (AUTUMN 2010) DIRECTIONS: Each of the numbered items or incomplete statements is followed by answers or by completions of the statement. Select the ONE lettered answer or completion that is BEST in each case. 1. A study with an intragastric barostat recorded receptive relaxation in the gastric reservoir of a healthy subject. Select the most likely numbered site, which was the origin of the stimulus that initiated this gastric accommodation reflex. A. 1 B. 2 C. 3 D. 4 E. 5 2. Which one of the listed programs in the enteric nervous system library is most likely to evoke cramping lower abdominal pain? A. Migrating Motor Complex B. Postprandial Mixing Program C. Haustral Formation In The Colon D. Power Propulsion E. Nausea/Emesis 3. Ms. OSU Buckeye at the Thirsty I Hineygate “chugged” a 12oz can of Miller Light in a single swallow without experiencing any sensations of fullness or over distension in the epigastric region. Select from the list, the one gastrointestinal reflex most likely responsible for this observation: A. Sympathetic B. Enteroendocrine C. Peristaltic D. Vago-vagal E. Hormonal 4. Which one of the listed events would most likely trigger secondary peristalsis in the esophagus of a 55-yr-old male while having dinner at the Bexley Monk bar at 11:00 p.m. A. Onset of the migrating motor complex in the stomach
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B. A chunk of steak stuck in the upper esophagus C. Swallowing an over-the-counter antacid drug (e.g., Tums) D. Vagally-evoked increase in the volume of the gastric reservoir E. A swallow 5. The human electrogastrogram, which appears below, illustrates a pathological condition called tachygastria. The dominant peak is near 7 cpm. Select the expected frequency at the dominant peak when a human electrogastrogram is normal. A. 3 cycles/minute B. 1.5 cycles/minute C. 6 cycles/minute D. 12 cycles/minute E. 15 cycles/minute 6. Which one of the listed events will most likely signal the enteric nervous system to switch from the migrating motor complex program to the digestive state program? A. REM (dream) sleep B. Intake of a high caloric meal C. Treadmill exercise D. Defecation E. The start of a swallow 7. Select from the list the treatment most likely to stimulate the greatest volume of hydrochloric acid from the Pavlov pouch. A. Intravenous injection of a drug that blocks muscarinic receptors B. Injection of a proton pump inhibitor into the pouch lumen via the fistula C. Intravenous injection of gastrin D. Injection of a histamine H2 receptor antagonist into the pouch lumen via the fistula E. Cutting the connection of the vagus nerve to the pouch.
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8. Sandra B, a 39-year-old RN, explains to her mom that she is handling well the chemotherapy currently being used in the treatment of her breast cancer. She adds that her main complaint is not the nausea, but the intractable constipation associated with the morphine, which is her pain medication. Select the most likely pathophysiological explanation for Sandra B”s constipation.
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GI Practice Exam - PHYSIOLOGY 601 PRACTICE QUESTIONS...

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