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Estudou-se a topografia dos colaterais calibrosos do arco aortico em um exemplar de Procyon cancrivorus, adulto, macho, proveniente da Fazenda Experimental do Gloria, da Universidade Federal de Uberlândia, MG, Brasil, o qual teve seus vasos arteriais injetados com solucao corada de Neoprene Latex 450, com posterior fixacao em solucao aquosa de formol a 10% e submetidos a dissecacao. O arco aortico encontra-se em correspondencia a terceira costela, no antimero esquerdo da cavidade toracica. O primeiro ramo calibroso do arco aortico e o tronco braquiocefalico, situado medialmente a terceira costela, originando as arterias carotida comum esquerda, carotida comum direita e a subclavia direita, em correspondencia ao primeiro espaco intercostal. A arteria subclavia esquerda e o segundo ramo emergente do arco aortico, originando-se medialmente a terceira costela. As arterias subclavias direita e esquerda, cedem os mesmos colaterais em ambos os antimeros, ou seja, tronco costocervical esquerdo (medialmente a primeira costela), tronco costocervical direito (borda cranial da primeira costela), arterias cervical superficial esquerda e cervical superficial direita (borda cranial da primeira costela), arteria toracica interna esquerda (medialmente a segunda costela) e arteria toracica interna direita (borda cranial da primeira costela). The topography of the thick collaterals of the aortic arch in a crab  eating raccoon Procyon cancrivorus  Gray, 1865, Carnivora  Procyoniadae Abstract An anatomical study has been carried out on the topography of the thick collateral branches of the aortic arch in an adult male specimen of raccoon (Procyon cancrivorus) from the Gloria Experimental Farm, Federal University of Uberlandia MG, Brasil. For this purpose, the arterial blood vessels were injected with a ruddy solution of Neoprene Latex 450, fixed by means of a 10% aqueous solution of formaldehyde and then dissected. It has been observed that the aortic arch is in correspondence with the third rib at the left side of the thoracic cavity The first thick branch of the aortic arch is the brachiocephalic trunk which is situaded medially in regard to the third rib, originating the left common carotid artery, the right common carotid artery and the right subclavian artery in correspondence with the first intercostal space. The left subclavian artery is the second emerging branch of the aortic arch originating itself medialy to the third rib. The right and the left subclavian arteries give way to the same collaterals in both sides, as the left costocervical trunk (medially to the first rib), the right costocervical trunk (cranial edge of the first rib), the left and the right superficial cervical arteries (cranial edge of the first rib, the left internal thoracic artery (medially to the second rib), and the right internal thoracic artery (cranial edge of the first rib).

TOPOGRAFIA DOS COLATERAIS CALIBROSOS DO ARCO AÓRTICO DE UM MÃO - PELADA (Procyon cancrivorus  GRAY, 1865) (CARNIVORA  PROCYONIADAE)

TOPOGRAFIA DOS COLATERAIS CALIBROSOS DO ARCO AÓRTICO DE UM MÃO - PELADA (Procyon cancrivorus GRAY, 1865) (CARNIVORA PROCYONIADAE)