| J Anat. 2001 May; 198(Pt 5): 625–633. doi: 10.1046/j.1469-7580.2001.19850625.x. | PMCID: PMC1468251 |
Copyright © 2001 Anatomical Society of Great Britain and Ireland A novel branching pattern of the superior mesenteric artery found in the bullfrog (Rana catesbeiana) amphibian
KOICHIRO ICHIMURA, KENJI KOIZUMI, HIROYUKI KUDOH, TAKAYOSHI MIYAKI, and TATSUO SAKAI Department of Anatomy, Juntendo University School of Medicine, Tokyo, Japan Abstract The branching and distribution patterns of the superior mesenteric artery were studied in 10 adult bullfrogs ( Rana catesbeiana) after injection of coloured latex solution into the vasculature. The abdominal digestive organs in the bullfrog were mainly supplied by the coeliac artery and the superior mesenteric artery, both of which arose as a common trunk, the coeliacomesenteric artery, from the abdominal aorta. The coeliac artery supplied the stomach, liver, gallbladder and the pancreas, whereas the first branch of the superior mesenteric artery was the splenic artery with other branches supplying the greater part of intestine. The apex of the intestinal loop was defined as the region supplied by the trunk of the superior mesenteric artery, and its intestinal branches constituted a ‘nested formation' which had the following characteristics. (1) The branches of the trunk were distributed to both sides of the apex, and the distribution regions of younger branches were located more distant from the apex than those of older branches. (2) Two branches directed towards both sides of the trunk frequently made a common stem arising from the trunk. The second branch of the superior mesenteric artery constituted a secondary trunk and its distribution region could be defined as a secondary apex, since 1 of its branches also constituted a nested formation which was distributed to both sides of the primary and secondary apices. The intestinal branches of the superior mesenteric artery were divided into 4 types on the basis of their pattern of branching and course. It is suggested that the nested formation of the superior mesenteric artery in the bullfrog is a remnant of the vascular pattern of the tadpole, which possesses a double spiral mode of intestinal convolution, probably supplied by arteries with the nested formation in a latent form.
Full Text The Full Text of this article is available as a PDF (1.1M). These references are in PubMed. This may not be the complete list of references from this article. - Gadhoke, JS; Lindsay, RT; Desmond, RK. Comparative study of the major arterial branches of the descending aorta, and their supply to the abdominal viscera in the domestic turkey (Meleagris gallopavo). Anat Anz. 1975;138(5):438–443. [PubMed]
- Higashi, N; Sone, C. [Two anomalous cases of truncus celiacus]. Kaibogaku Zasshi. 1986 Dec;61(6):709–715. [PubMed]
- Koizumi, M; Horiguchi, M. Accessory arteries supplying the human transverse colon. Acta Anat (Basel). 1990;137(3):246–251. [PubMed]
- López-Fuster, MJ; Ventura, J. Anatomical study of the abdominal arterial system in soricids (Insectivora, Mammalia): functional and phylogenetic implications. Anat Rec. 1997 May;248(1):142–147. [PubMed]
- Nishiguchi, T; Kitamura, S; Matsuoka, K; Sakai, A. [A case of the three branches of the coeliac trunk arising directly from the abdominal aorta]. Kaibogaku Zasshi. 1988 Dec;63(6):553–556. [PubMed]
- Pretty, R; Naitoh, T; Wassersug, RJ. Metamorphic shortening of the alimentary tract in anuran larvae (Rana catesbeiana). Anat Rec. 1995 Jul;242(3):417–423. [PubMed]
- Vandamme, JP; Bonte, J. The branches of the celiac trunk. Acta Anat (Basel). 1985;122(2):110–114. [PubMed]
- Ventura, J; López-Fuster, MJ. The arterial system of the abdominal viscera and the pelvis of the dormouse, Eliomys quercinus (Gliridae, Rodentia). Ann Anat. 1994 Aug;176(4):327–331. [PubMed]
- Ventura, J; Gispert, E; López-Fuster, MJ. Arterial vascularization of the abdominal and pelvic regions in the degu, Octodon degus (Rodentia, Octodontidae). Ann Anat. 1996 Jun;178(3):285–291. [PubMed]
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