Abstract
The mesenteric artery is a high caliber vessel dependent on the abdominal artery, right below the emergence of the vessels destined for the liver and stomach. The present study aimed to describe the behavior of the arterial vessel in the small intestine of the crab-eating raccoon (Procyon cancrivorus). The animals were collected on highways (roadkill). Cannulation of the abdominal aorta, perfusion with warmed water (40°C) and stained latex injection (Neoprene 450, Dupont do Brasil and Sulvinil stain, Glassuret S.A) were performed, followed by formaldehyde fixation (10%). The dissection and photographic documents (Sony Cyber-shot, 8.1 megapixels) made it possible to systemize the arteries and define the vascular patterns of the viscera. It was verified that the mesenteric cranial artery supports the entire jejune and the mesenteric portion of the ileum. Next to the mesenteric border, it becomes an anastomosis forming vascular arches from where straight arteries leave, supplying the mesenteric portion and sometimes also the jejunal anti-mesenteric portion. The artery that irrigates the ileum comes up as a branch of the cranial mesenteric artery. Anatomic knowledge of the vascular pattern of the crab-eating raccoon (Procyon cancrivorus) is of fundamental importance for researches regarding the arterial distribution of the intestine considering anatomic variances.
Highlights
The crab-eating raccoon is a mammal of the Procyonidae family, of wide geographic distribution, occupying all national biomes, and one of the least studied Brazilian carnivores (MORATO et al, 2004)
This study aimed to examine the particular aspects related to the distribution of the arterial branches in the small intestine
As Ede (1965), Schwarze and Schroder (1970), Nickel et al (1977) and Getty (1981) report, the cranial mesenteric artery is a single vessel that comes out from the aorta artery, and the same was observed in carnivore mammals
Summary
The crab-eating raccoon is a mammal of the Procyonidae family, of wide geographic distribution, occupying all national biomes, and one of the least studied Brazilian carnivores (MORATO et al, 2004). Fur color oscillates from dark to grizzled, being undoubtedly identified due to a black mask that goes from the eyes to the jaw line and the uppermost height of the hind limbs, as well as its peculiar tail (REIS et al, 2006). It is an animal of nocturnal habits, solitary, which lives near to mangroves, beaches, swamps and other water bodies, Maringá, v. This study aimed to examine the particular aspects related to the distribution of the arterial branches in the small intestine. According to Morandini (1968), the mesenteric arteries are responsible for blood supply in the small and large intestine in reptiles, birds and mammals, and the digested nutrients are absorbed by the epithelium and transferred to circulation (HILDEBRAND, 1995)
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