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01.03.2018 | Original Article | Ausgabe 2/2018

Anatomical Science International 2/2018

Macroscopic anatomical study of the distribution of the cranial mesenteric artery to the intestine in the rabbit

Zeitschrift:
Anatomical Science International > Ausgabe 2/2018
Autoren:
Tetsuhito Kigata, Reona Ikegami, Hideshi Shibata

Abstract

Intestinal surgery is commonly performed to cure bowel obstruction in rabbits, but detailed descriptions of the arterial supply to the intestine are incomplete. We investigated anatomical variations of the distribution of the cranial mesenteric artery to the intestine in 33 New Zealand White rabbits by injecting colored latex into the arteries. The cranial mesenteric artery arose independently from the abdominal aorta at about 2.0 cm caudal to the celiac artery and branched off the pancreaticoduodenal, middle colic, ileocecocolic, jejunal and ileal arteries. One or occasionally two caudal pancreaticoduodenal arteries supplied the distal duodenum, and one to three middle colic arteries supplied the transverse colon and the initial portion of the descending colon. The ileocecocolic artery arose distal to the middle colic arteries and provided the right colic, ileocecal and appendicular arteries, and branches to the proximal colon, with various branching patterns, which were grouped into four major types. These arteries and branches supplied the ileum, cecum, appendix and proximal colon. The cranial mesenteric artery also provided the jejunal arteries (predominantly 17; range 11–21) and one ileal artery supplying the jejunum and proximal ileum, respectively. The results show that the distribution patterns of the cranial mesenteric artery to the intestine in the rabbit are highly specialized to this species. Such specialization should always be considered when performing intestinal surgery in rabbits.

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