Morphological description of the collateral visceral branches from abdominal aorta of squirrel monkey/Descricao morfologica dos ramos colaterais viscerais da aorta abdominal do macaco-de-cheiro

• Published in: Ciência rural Vol. 41; no. 1; p. 94
• Main Authors: da Silva, Maria Rogeria Menezes, Lima, Ana Rita, Lacreta, Jr., Antonio Carlos Cunha, Ishizaki, Mirian Naomi, Imbeloni, Aline Amaral, Muniz, Jose Augusto Pereira Carneiro, Branco, Erika Renata
• Format: Journal Article
• Language: Spanish
• Published: Universidade Federal de Santa Maria 01-01-2011
• Subjects: Analysis; Elastomers; Endangered species
• ISSN: 0103-8478

The Saimiri sciureus is a non human primate that exists in the amazon region, which is not in the list of endangered animals according to IBAMA. So, this research systemized the collateral branches visceral of the abdominal aorta of these animals. It was used six animals, three males and three females, which had the circulatory system filled with latex Neoprene added of radiographic contrast. The results showed that the abdominal aorta ventrally emitted a collateral visceral branch called celiac artery, which originates three branches: left gastric, hepatic and lienal arteries. The branches of the celiac artery promoted the irrigation of the stomach, duodenum, liver, pancreas and spleen. Then the abdominal aorta emitted the cranial mesenteric artery, which was of a larger size than the celiac artery and was caudally juxtaposed. The cranial mesenteric artery supply branches that irrigate the final portion of the duodenum, pancreas, jejunum, ileum, cecum and colon. Abdominal aorta emitted laterally the right and left kidney arteries. The left adrenal artery as a collateral branch of the celiac artery and the right adrenal artery has been originated in the right renal artery. The mesenteric caudal artery was emitted from the ventral surface of the abdominal aorta, below the kidney arteries. In L6, abdominal aorta has two derivations to origin the right and left external iliac arteries and these had given origin to the internal iliac and femoral artery right and left. The testicular or ovary arteries were emitted in internal iliac arteries. Of the abdominal aorta led to origin the sacral median artery and in this sequence there is the caudal median artery. The study of this specie is very important to generate knowledge about non human primates existing in our country. It can be said that Saimiri sciureus is an important biological model for development of biomedical researches. Key words: arteries, primates, morphology. O Saimiri sciureus e um primata nao humano existente na regiao amazonica e nao consta na lista de animais em perigo de extincao, de acordo com o IBAMA. Neste trabalho, sistematizou-se os ramos colaterais viscerais da aorta abdominal de seis animais sendo tres machos e tres femeas, os quais tiveram o sistema circulatorio preenchido com latex Neoprene, adicionado de contraste radiografico. O resultado observado foi que a aorta abdominal emitiu ventralmente, como ramo colateral visceral, a arteria celiaca, que se trifurcou nas arterias gastrica esquerda, hepatica e lienal. Os ramos da arteria celiaca promovem a irrigacao do estomago, duodeno, figado, pancreas e baco. A seguir, a aorta abdominal emitiu a arteria mesenterica cranial, de calibre maior que a arteria celiaca e justaposta caudalmente. A arteria mesenterica cranial emitiu ramos que vascularizaram a parte final do duodeno, pancreas, jejuno, ileo, ceco, colon maior e colon menor. A aorta abdominal emitiu lateralmente as arterias renais direita e esquerda. A arteria adrenal esquerda surgiu como um ramo colateral direto da arteria celiaca e a arteria adrenal direita surgiu da arteria renal direita. A arteria mesenterica caudal foi emitida da superficie ventral da aorta abdominal, logo abaixo das arterias renais. Em L6, a aorta abdominal se bifurcou, dando origem as arterias iliacas externas direita e esquerda e estas deram origem a arteria iliaca interna e femoral direita e esquerda. As arterias testiculares ou ovaricas tiveram origem na arteria iliaca interna. A continuidade da aorta abdominal deu origem a arteria sacral mediana e a continuidade desta e chamada de arteria caudal mediana. O estudo da especie em questao e de suma importancia para gerar conhecimentos a respeito dos primatas nao humanos existentes em nosso pais. Dessa forma, pode-se dizer que o Saimiri sciureus e um importante modelo biologico para o desenvolvimento de pesquisas biomedicas. Palavras-chave: arterias, primatas, morfologia.