Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)

Opossum is considered one of the most primitive mammals, with transition evolutive characteristics. In mammals, the aorta artery is referred as the main body blood vessel. The arteries wall structural organization follows a basic pattern, being contituted of three tunics: Intima, Median and Adventic...

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Autores principales:	Martins,Márcia Regina Fernandes Boaro, Pinto e Silva,José Ricardo de Carvalho, Martins,Bruna Boaro
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2010
Materias:	Aorta Opossum
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100041
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spelling	oai:scielo:S0717-950220100001000412010-07-05Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)Martins,Márcia Regina Fernandes BoaroPinto e Silva,José Ricardo de CarvalhoMartins,Bruna Boaro Aorta Opossum Opossum is considered one of the most primitive mammals, with transition evolutive characteristics. In mammals, the aorta artery is referred as the main body blood vessel. The arteries wall structural organization follows a basic pattern, being contituted of three tunics: Intima, Median and Adventicial. After euthanasia, three samples of opossum had segments from the aorta artery ascendent, thoracic descending and abdominal descending portions removed, fixed in phormalin at 10% for 48 hours. Then, the material was washed in alcohol 70% several times, dehydrated in alcohois of growing concentrations, diafanized in xylol and included in "paraplast". Cuts with 5 to 7µm of thickness were placed in histological laminae and submitted to color methods of Hematoxilin-Eosin, Masson, Mallory and Calleja Tricromics. It was observed that in the different portions ascendent, thoracic and abdominal descending of aorta, the intima tunic presents much thick, made up of a layer of smooth muscular cells and elastic fibers, forming a limiting internal elastic membrane. In the three portions studied, the median tunic was the most evident layer, constituted of colagen fibers, smooth muscular cells arranged in a circular manner and elastic fibers, showing a variation in the mural elements proportion. It was evidenced the presence of a external elastic lamina, marking the transition between the median and adventicial tunic, formed by elastic fibers condensation. The aortic adventicial tunic showed to be little organized, having in its structure predominantely colagen fibers beans with some isolated smooth muscular fibers or in small fascicules among a few elastic fibers.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.28 n.1 20102010-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100041en10.4067/S0717-95022010000100041
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aorta Opossum
spellingShingle	Aorta Opossum Martins,Márcia Regina Fernandes Boaro Pinto e Silva,José Ricardo de Carvalho Martins,Bruna Boaro Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)
description	Opossum is considered one of the most primitive mammals, with transition evolutive characteristics. In mammals, the aorta artery is referred as the main body blood vessel. The arteries wall structural organization follows a basic pattern, being contituted of three tunics: Intima, Median and Adventicial. After euthanasia, three samples of opossum had segments from the aorta artery ascendent, thoracic descending and abdominal descending portions removed, fixed in phormalin at 10% for 48 hours. Then, the material was washed in alcohol 70% several times, dehydrated in alcohois of growing concentrations, diafanized in xylol and included in "paraplast". Cuts with 5 to 7µm of thickness were placed in histological laminae and submitted to color methods of Hematoxilin-Eosin, Masson, Mallory and Calleja Tricromics. It was observed that in the different portions ascendent, thoracic and abdominal descending of aorta, the intima tunic presents much thick, made up of a layer of smooth muscular cells and elastic fibers, forming a limiting internal elastic membrane. In the three portions studied, the median tunic was the most evident layer, constituted of colagen fibers, smooth muscular cells arranged in a circular manner and elastic fibers, showing a variation in the mural elements proportion. It was evidenced the presence of a external elastic lamina, marking the transition between the median and adventicial tunic, formed by elastic fibers condensation. The aortic adventicial tunic showed to be little organized, having in its structure predominantely colagen fibers beans with some isolated smooth muscular fibers or in small fascicules among a few elastic fibers.
author	Martins,Márcia Regina Fernandes Boaro Pinto e Silva,José Ricardo de Carvalho Martins,Bruna Boaro
author_facet	Martins,Márcia Regina Fernandes Boaro Pinto e Silva,José Ricardo de Carvalho Martins,Bruna Boaro
author_sort	Martins,Márcia Regina Fernandes Boaro
title	Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)
title_short	Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)
title_full	Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)
title_fullStr	Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)
title_full_unstemmed	Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)
title_sort	contribution to the study of aortic mural structure of opossum (didelphis albiventris)
publisher	Sociedad Chilena de Anatomía
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100041
work_keys_str_mv	AT martinsmarciareginafernandesboaro contributiontothestudyofaorticmuralstructureofopossumdidelphisalbiventris AT pintoesilvajosericardodecarvalho contributiontothestudyofaorticmuralstructureofopossumdidelphisalbiventris AT martinsbrunaboaro contributiontothestudyofaorticmuralstructureofopossumdidelphisalbiventris
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Contribution to the Study of Aortic Mural Structure of Opossum (Didelphis albiventris)

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