Gastroenterology Quiz #6: Anatomy of Abdominal Aorta and GI Blood Supply

1. A 55-year-old man with a history of hypertension and smoking presents to the emergency department with sudden onset of severe back pain. A CT scan of the abdomen and pelvis with contrast shows an abdominal aortic aneurysm (AAA) that has begun to rupture. Which of the following arteries is most directly at risk of being compromised by this condition? 

Question 1 of 5

2. A 70-year-old woman presents with postprandial epigastric pain, weight loss, and fear of eating. Angiography shows stenosis of two arteries originating from the abdominal aorta. Which of the following pairs of arteries is most likely stenosed in this patient? 

Question 2 of 5

3. A patient presents with a history of atherosclerosis and recent episodes of bloody stools. Colonoscopy reveals ischemia localized to the splenic flexure of the colon. Which of the following vessels is most likely compromised, leading to this patient's symptoms? 

Question 3 of 5

4. During a surgical procedure, a surgeon notes a pulsatile vessel lying posterior to the pancreas before it branches into two vessels that supply the liver and spleen. Which of the following vessels is being observed?

Question 4 of 5

5. A patient presents with acute onset of severe abdominal pain. A CT angiogram reveals a thrombus in an artery that supplies the midgut, including the jejunum, ileum, cecum, and ascending colon. Which of the following arteries is most likely occluded in this patient? 

Question 5 of 5


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