RAMOS DO ARCO AÓRTICO E AORTA ABDOMINAL DO JAGUARUNDI (Herpailurus yagouaroundi)

The jaguarundi (Herpailurus yagouaroundi) is a small feline belonging to the class Mammalia. This work aims to investigate and describe the collateral branches of the aortic arch and abdominal aorta. Three specimens of jagouaroundi were studied, in which the arterial system was filled with latex solution with radiographic contrast and fixed in 10% formaldehyde. The aortic arch of two of the jaguarundi specimens analyzed divided into two branches, the brachiocephalic trunk and the left subclavian artery. Regarding the third specimen, a divergent configuration was found, in which the aortic arch originated the brachiocephalic trunk, with the presentation of the bicarotid trunk and a common trunk originating the two subclavian arteries. The branches of the abdominal aorta bore the celiac artery, which trifurcated into the hepatic, left gastric, and splenic arteries. Next was the cranial mesenteric artery and, caudally to it, the renal arteries, the testicular arteries and the caudal mesenteric artery. Finally, there were the external iliac arteries and the internal iliac arteries and median sacral artery. Thus, it is concluded that the ramifications of the arctic arch and the abdominal aorta of Jaguarundi have similarities to those in dogs and cats, except for the presence of a bicarotid trunk.