The jejunum
The anterior surface of the descending part is not covered by the peritoneum in the middle area where it is crossed in front by the root of the transverse mesoclolon; the horizontal part is covered by the peritoneum in front, except for a small area where the duodenum is crossed by the root of the mesentery of the small intestine (the superior mesenteric vessels are enclosed in the root).At the junction of the acceding part of the duodenum with the jejunum on the left side of the first, or most frequently.ICD 10 Coding makes you spend more time with patients and increase the quality of the care.