Contribution to the study of the origin and ramification of the cranial and caudal mesenteric arteries in Zebu foetuses / Contribuição ao estudo da origem e ramificação das artérias mesentéricas cranial e caudal, em fetos de bovinos azebuados

ABSTRACT

Reminding that the anatomical data in bovines usually regard european breeds (Bos taurus) we preposed to study now the pattern of the mesenteric arteries in zebu cattle (Bos indicus). Thuswe have dissected 30 foetuses (15 males and 15 females) which were injected with Neoprene latex 450 and fixed in formol solution(10%). The results obtained permit the following conclusions: 1) the cranial mesenteric artery arises from the abdominal aorta artery just after the colic artery or in common trunk with this and give up the following branches adrenal artery, diaphagmatic artery, artery to the adjacent connective tissue, pancreatic artery, caudal pancreatic duodenal artery, median colic artery, which anastomoses with the left colic artery, that derives from the caudal mesenteric artery; other branches are the jejunal arteries which form anastomotic arcades, the collateral branch, ileocecocolic artery which give up colic branches and ileal and cecal arteries and then it fmishs by anastomoses with these vessels and with the collateral branch and the jejunal arteries. The caudal mesenteric artery arises from the abdominal aorta artery near of its terminal branches; it gives up the left colic artery and following as cranial retal artery.

RESUMO

Foram estudados 30 fetos de bovinos azebuados (15 machose 15 fêmeas), injetados com solução de Neoprene latex 450 e fixados em solução de formol a 10,0%, tendo-se verificado que a artéria mesentérica cranial origina-se da artéria aorta abdominal, caudalmente à artéria celíaca ou em tronco comum com esta, emitindo a ses peculiares. Para a artéria mesentérica caudal notou-se sua origem sempre da artéria aorta abdominal, próximo aos seus ramos terminais, emitindo comumente a artéria cólica esquerda cranialmente e continuando-se como artéria retal cranial.