Vascularização arterial do trato gastrointestinal da Trachemys scripta elegans, Wied, 1838

Vascularization of the small intestine in lesser anteaters, Tamandua tetradactyla (Xenarthra: Myrmecophagidae)

“…In this individual, the vessels anastamose after 4 cm into one trunk in the mesothelial peritoneum. The retroperitoneal origin of the CrMA has been confirmed in turtles (RODRIGUES et al 2003), rodents (CARVALHO et al 1999, MACHADO et al 2006, CULAU et al 2008), and ungulates (PEDUTI NETO & PRADA 1970, MACHADO et al 2000, and is consistent with our observations. PINTO et al (1998) described the CrMA in domestic ducks, showing that the caudal visceral branch of the abdominal aorta also provides a small contribution to the nutrition of the colon.…”

Morphology and Vascularization of the Gastric Compartments in Three-Toed Sloth (Bradypus torquatus Illiger, 1811)

“…Particular differences were found between B. torquatus and other mammals in relation to cranial floor vascularization of the peritoneal cavity. The gastric and celiac vessels were not directly involved with the liver and duodenum nutrition, diverging from the description in chelonians (Rodrigues et al;Santos et al, 2004), rodents (Culau et al), suidae (Cavalcante Filho et al, 1998) and , open diverticulum (C), pre-pyloric stomach I (E) and pre-pyloric stomach II (F). External views of: middle cardiac stomach (1), fundic stomach (2), diverticulum (3), left cardiac stomach (4), pre-pyloric stomach I (5), pre-pyloric stomach II (6), and pyloric sphincter (7).…”

“…To guarantee the oxygen and glucose supply, the arteries derived from the celiac trunk and the cranial mesenteric are emphasized to provide nutrition to the stomach, spleen, pancreas and the anterior and middle intestines (Grassé, 1955;Moore & Persaud, 2008). Some of these vessels were described in rodents and chelonians (Rodrigues et al, 2003;Culau et al, 2008). Studies on digestive tract morphology in Xenarthra refer to the morphology and vascularization of these structures without specifying aspects of the origin, route, destination or domain territory of the arteries destined for gastric compartments (Britton, 1941;Grassé, 1955;Langer, 1984;Foley et al, 1995;Diz et al, 2006;Souza et al, 2010).…”

Modelo de suprimento sanguíneo do intestino grosso do tamanduá bandeira (Myrmecophaga tridactyla)

“…Nos mesos dos vertebrados superiores, perde-se essa característica (SCHWARZE & SCHÖDER, 1970;NICKEL et al, 1977;GETTY, 1981;BARNWAL et al, 1982;EVANS, 1993;CLAUSS et al, 2005). Por outro lado, estudos recentes tratam da configuração dos vasos no mesentério e mesocólon em: quelônios (RODRIGUES et al, 2003), aves (PINTO et al, 1998), roedores (CARVALHO et al, 1999;MACHADO et al, 2000;MACHADO et al, 2002;MACHADO et al, 2006;CULAU et al, 2008) e ungulados (BARNWAL et al, 1982;PEDUTI NETO & SANTIS, 1970;PEREIRA et al, 1978;MACHADO et al, 2000), entretanto, esses autores não detalharam o trajeto intraseroso dos vasos para que pudesse ser comparado.…”

“…Cabe destacar uma grande diferença no modelo humano, neste a AMC é retroperitonial e no tamanduá bandeira esta situa-se entre os dois folhetos da serosa peritonial. A origem da AMC no retroperitônio, caudal à artéria renal, é fato coincidente com achados em outros animais: quelônios (RODRIGUES et al, 2003), aves (PINTO et al, 1998) e roedores (CARVALHO et al, 1999;MACHADO et al, 2006;CULAU et al, 2008).…”