Gastroenterology MCQ 046
Meckel's diverticulum most commonly presents as:A. Gastrointestinal bleeding.
B. Obstruction.
C. Diverticulitis.
D. Intermittent abdominal pain.
Gastroenterology MCQ 047
All of the following statements about the embryology of Meckel's diverticulum
are true except:
are true except:A. Meckel's diverticulum usually arises from the ileum within 90 cm. of the ileocecal valve.
B. Meckel's diverticulum results from the failure of the vitelline duct to obliterate.
C. The incidence of Meckel's diverticulum in the general population is 5%.
D. Meckel's diverticulum is a true diverticulum possessing all layers of the intestinal wall.
E. Gastric mucosa is the most common ectopic tissue found within a Meckel's diverticulum.
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Gastroenterology MCQ 048
Patients with established, complete, simple, distal small bowel obstruction usually have the following findings on plain and upright abdominal radiographs:A. Distended small bowel identifiable by the valvulae conniventes.
B. Multiple air-fluid levels.
C. Modest amount of gas in the pelvis.
D. Peripheral, rather than central, distribution of gas.
E. Prominent haustral markings.
F. Free air.
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Gastroenterology MCQ 049
History and physical examination permit the diagnosis of intestinal obstruction in most cases. Which of the 
following are important for the clinical diagnosis of small bowel obstruction?A. Crampy abdominal pain.
B. Fever.
C. Vomiting.
D. Abdominal distention.
E. Leukocyte count above 12,000.
F. Abdominal tenderness.
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Gastroenterology MCQ 050
Complete mechanical small bowel obstruction can cause dehydration by:
A. Interfering with oral intake of water.
B. Inducing vomiting.
C. Decreasing intestinal absorption of water.
D. Causing secretion of water into the intestinal lumen.
E. Causing edema of the intestinal wall.
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