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Anatomical Variations of the Portal Vein in Ruminants

Anatomical Variations of the Portal Vein in Ruminants

Reda Mohamed1, 2* 

1Department of Basic Veterinary Sciences, School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine Campus, St. Augustine, Trinidad and Tobago; 2Anatomy and Embryology Department, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt.

kkidareda@gmail.com 

ABSTRACT

The anatomical variations of the extrahepatic ramifications of the portal vein were analysed. The portal vein gives off the gastroduodenal, splenic and cranial mesenteric veins. The splenic vein continues as the left gastric vein. The right ruminal and reticular veins originate from the splenic vein. The epiploic branch originates either for the splenic or right ruminal veins. The left ruminal vein originates either from the splenic or left gastric veins. The accessory reticular and left gastroepiploic veins originate from the left gastric vein. The cranial pancreaticoduodenal, right gastric and right gastroepiploic veins detach from the gastroduodenal vein. The caudal duodenal or caudal pancreaticoduodenal, jejunal, ileal, ileocolic and caudal mesenteric veins originate from the cranial mesenteric vein. The caecal vein is considered as either as a branch of the ileocolic vein or as its direct continuation. The middle colic vein arises from either the cranial mesenteric vein, the caudal mesenteric vein or the right colic vein. The left colic and cranial rectal veins are considered branches from the caudal mesenteric vein or as its direct continuations. The sigmoid veins arise from either the left colic vein or the caudal mesenteric vein. 

 

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Pakistan Journal of Zoology

August

Vol. 52, Iss. 4, Pages 1225-1630

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