1
.
| Primary and secondary arterial arches |
2
.
| Pancreaticoduodenal vein (note that this vein receives branches which accompany the right branch of the middle colic artery, which in this specimen replaces the right colic artery) |
3
.
| Head of pancreas |
4
.
| Upper pointer: Ileal artery Lower pointer: Superior mesenteric plexus |
5
.
| Horizontal part of duodenum (covered by connective tissue) |
6
.
| Marginal artery (of Drummond) forming communication between middle colic and ileocolic arteries (right colic artery absent) |
7
.
| Ascending colon |
8
.
| Superior mesenteric lymph nodes |
9
.
| Ileum |
10
.
| Transverse colon (elevated) |
11
.
| Superior mesenteric plexus |
12
.
| Middle colic artery |
13
.
| Middle colic artery (left branch forming marginal artery) |
14
.
| Straight arteries |
15
.
| Filament of inferior mesenteric plexus |
16
.
| Duodenojejunal flexure |
17
.
| Marginal artery |
18
.
| Upper pointer: Middle colic vein Lower pointer: Superior mesenteric vein |
19
.
| Jejunal arteries |
20
.
| Jejunal vein |
21
.
| Descending colon |
22
.
| Jejunum |
23
.
| Inferior mesenteric plexus |