Dissection of jejunum, ileum and colon

Arteries, veins and nerves of left colic flexure, close-up view

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Image #143-7

Dissection of jejunum, ileum and colon

Arteries, veins and nerves of left colic flexure, close-up view

The jejunum has been pulled downward from the duodenojejunal flexure. The mesocolon has been dissected. Lymphatic structures which were previously shown (141-5) have now been resected.

1. Transverse colon (elevated)
2. Straight artery
3. Marginal artery
4. Inferior mesenteric vein (near junction with superior mesenteric vein)
5. Middle colic artery
6. Superior mesenteric vein
7. Jejunum
8. Left branch of middle colic artery (note communication with left colic artery)
9. Band of intact peritoneum
10. Filament of inferior mesenteric plexus
11. Descending colon
12. Left colic artery
13. Inferior mesenteric vein (also see #4 above)