MCQ – 86884

Correct Answer � C Explanation

• Highlighted structure here is the third part of the duodenum

THIRD PART-DUODENUM

COURSE

• It runs horizontally to the left, across the lower part of the body of L3 vertebra, crosses in front of IVC, and after that takes a smooth curve upward to eventually become constant with the ascending part of the duodenum.

RELATIONS

• Anteriorly: Root of the mesentery, superior mesenteric vessels, and coils of the jejunum.
• Posteriorly: Right psoas major, right ureter, IVC, abdominal aorta, and right gonadal vessels.
• Superiorly: Head of the pancreas with its uncinate process. Inferiorly: Coils of the jejunum.