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MBBS QUESTION #10199
Question 1
Which anatomical point marks the classical junction between foregut and midgut derivatives, relevant both to blood supply (coeliac trunk vs. superior mesenteric artery) and to referred visceral pain patterns?
  • The major duodenal papilla (ampulla of Vater)
  • The mid-second part of the duodenum, at the entry of the common bile duct✔️
  • The duodenojejunal flexure
  • The pylorus
Correct Answer Explanation
The foregut-midgut boundary is traditionally placed at the opening of the bile duct into the second part of the duodenum; structures proximal to this point are supplied by the coeliac trunk (foregut), while structures distal are supplied by the superior mesenteric artery (midgut) — explaining differing patterns of referred pain and vascular pathology.