Origins and distributions of the cranial and caudal mesenteric arteries in fetuses of wild boars (Sus scrofa scrofa, Linnaeus – 1758)

The anatomical behavior of the cranial and caudal mesenteric arteries was studied in 21 wild boars fetuses, female and male, in which one injected, through the thoracic aorta, a Neoprene Latex “450” solution, stained with a specific pigment and, then, they were fixed in a 10% formaldehyde solution. The analysis of results allowed one to state that the cranial mesenteric artery originated from the abdominal aorta, caudal to the celiac artery, issuing right and left adrenal branches, pancreatic, and the caudal pancreaticduodenal, jejunal, middle and right colic, and ileo-ceco-colic arteries. The caudal mesenteric artery originated from the abdominal aorta, from its caudal third, issuing the left colic and the cranial rectal arteries. Anastomoses were found between jejunal, left colic and cranial rectal, and left and middle colic arteries. In the three species, the cranial and caudal mesenteric, caudal pancreatic-duodenal, jejunal, right and middle colic, and ileo-cecocolic arteries showed similar vascular patterns, whereas the differences with regard to emission of branches or isolated emergence or emergence in common trunk didn’t change the blood supply.