What Is the Duodenum?
Reviewed: Dr. Gromatzky
2. Four Segments
The second segment, which is the descending part, begins at the duodenal flexure and is inferior to L3, before proceeding to the inferior duodenal flexure. The third part of the duodenum, called the horizontal or inferior segment, is 10 to 12 centimeters long.
It begins at the inferior duodenal flexure and passes in front of the interior vena cava, aorta, and vertebral column. The fourth part, or ascending segment, is located at the L3, and becomes the duodenojejunal flexure, and goes on to join the jejunum.
Advertisement
