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Chapter 25. Overview of Gastrointestinal Function & Regulation
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A researcher conducts a study of the regulation of salivary secretion in a group of volunteer medical students under various conditions. Which of the following conditions would be expected to be associated with the lowest rates of secretion?
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B. Undergoing a mock dental exam
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D. Exposure to a nauseating odor
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E. Resting control conditions
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A patient suffering from anemia comes to his physician complaining of frequent bouts of gastroenteritis. A blood test reveals antibodies directed against gastric parietal cells. The anemia in this patient is attributable to hyposecretion of which gastric product?
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A 50-year-old man comes to see his clinician complaining of severe epigastric pain, frequent heartburn, and unexplained weight loss of 20 pounds over a 6-month period. He claims to have obtained no relief from over-the-counter H2 antihistamine drugs. He is referred to a gastroenterologist, and upper endoscopy reveals erosions and ulcerations in the proximal duodenum and an increased output of gastric acid in the fasting state. The patient is most likely to have a tumor secreting which of the following hormones?
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Which of the following has the highest pH?
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B. Colonic luminal contents
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E. Contents of the intestinal crypts
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A 60-year-old woman undergoes total pancreatectomy because of the presence of a tumor. Which of the following outcomes would not be expected after she recovers from the operation?
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E. Decreased absorption of amino acids
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