Aspectos anatômicos das artérias renais em queixadas (Tayassu pecari Link, 1795)

Abstract

Aspectos anatômicos das artérias renais em queixadas(Tayassu pecari Link, 1795) Anatomical aspects of the renal arteries in white-lipped peccaries {Tayassu peca ri Link, 1795) Resumo Utilizaram-se 30 pares de rins de queixadas (Tayassu pecari), obtidos de animais adultos, machos e fêmeas, 15 dos quais tiveram suas artérias injetadas com solução corada de Neoprene Látex "450". Em seguida, foram fixados em solução aquosa de formo! a 10% e, posteriormente, dissecados. Qs outros 15 pares foram injetados pela mesma via arterial, agora com Vinilite dissolvido em acetona e corado, em seguida submetidos à corrosão ácida, visando o reconhecimento do padrão vascular arterial renal, particularmente no referente às divisões e subdivisões das artérias renais. Os resultados obtidos permitem afirmar que: a) as artérias renais, sempre únicas, dividem-se, aos níveis pré-hilar e hilar renais, em dois ou três ramos setoriais; b) os ramos setoriais da artéria renal direita, quando duplos, apresentam-se como dorsal e ventral (36,6%) ou cranial e caudal (16,6%); quando triplos, esses ramos se dispõem como ventral, dorsocranial e dorsocaudal (36,6%); c) os ramos setoriais da artéria renal esquerda, quando duplos, exibem-se como dorsal e ventral (33,3%) ou cranial e caudal (16,6%); quando triplos, esses ramos ora são ventral, dorsocranial e dorsocaudal (36,6%), ora dorsal, ventrocranial e ventrocaudal (13,3%); d) os ramos setoriais, por sua vez, emitem de dois a três ramos segmentares destinados a territórios próprios do parênquima renal. Palavras-chave: Tayassuidae; Tayassu pecar;, anatomia; artérias renais.Abstract lt was studied 30 pairs of kidneys of withe-lipped peccaries ( Tayassu pecan), obtained of adult animais, males and females, 15 of the which had its arteries injected with red-faced solution of Neoprene Latex "450", soon after they were fastened in aqueous solution of formalin at 10% and late r it was dissected. The other 15 pairs were injected, by the renal arteries, now with Vinilite dissolved in acetone and red-faced, soon after submitted to the acid corrosion, seeking the recognition of the renal arterial vascular pattern, particularly in the regarding the divisions and subdivisions of the renal arteries. The obtained results allow to affirm that: a) the renal arteries, always only, they divide, to the leveis pre-hilar and hilar renal, in two or three sectorial branches; b) the sectorial branches of the right, when double, come as dorsal and ventral (36.6%) or cranial and caudal (16.6%); when triples, those branches are disposed as ventral, dorsocranial and dorsocaudal (36.6%); c) the sectorial branches of the left renal artery, when double, are exhibited as dorsal and ventral (33.3%) or cranial and caudal (16.6%); when triples, those branches are ventral, dorsocranial and dorsocaudal (36.6%) or dorsal, ventrocranial and ventrocaudal (13.3%); d) the sectorial branches, for its time, emit of two to three segmentary branches destined to territories of the kidneys.

Aortic branches and rete mirabile of the limbs of two‐toed sloth (Choloepus didactylus)

“…On the other hand, Machado et al (2000), in a study on 30 pairs of renal arteries in peccaries ( Tayassu pecari ), found that they were divided into prehilar and hilar regions in approximately 70% and 30% of the specimens, respectively, on both sides of the aorta, similar to those found in C. didactylus .…”