CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION

Chordae tendineae architecture and their junction with papillary muscle were studied with scanning electron microscopy, comparing human and swine hearts. Papillary muscles with the corresponding chordae tendineae were obtained from human and pig (Sus scrofa) hearts after exposition of the left ventr...

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Autores principales:	Wang Gusukuma,Luciana, Prates,José Carlos, Smith,Ricardo Luiz
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2004
Materias:	Chordae tendineae Architecture Human Pigs Scanning electron microscopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000400005
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spelling	oai:scielo:S0717-950220040004000052005-02-24CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTIONWang Gusukuma,LucianaPrates,José CarlosSmith,Ricardo Luiz Chordae tendineae Architecture Human Pigs Scanning electron microscopy Chordae tendineae architecture and their junction with papillary muscle were studied with scanning electron microscopy, comparing human and swine hearts. Papillary muscles with the corresponding chordae tendineae were obtained from human and pig (Sus scrofa) hearts after exposition of the left ventricle cavity, fixed with 4% formaldehyde. The specimens were sectioned in small samples and divided in four groups, a control one and the others submitted to digestion in a solution of 2.5% sodium hypochlorite in saline solution during 5, 10 and 15 minutes respectively. The specimens were washed and fixed in 1% osmium tetroxide in cacodylate buffer, kept in 1% tannic acid for 30 minutes, dehydrated and critical point dried, mounted and sputtered with gold. The specimens were examined and documented in a JEOL 5200 scanning electron microscope. The human and swine chordae tendineae have similar architecture: both are covered by the endothelium which was in continuity with the papillary muscles, the inner layers are composed by longitudinal and oblique collagen bundles intermingled with elastic fibers. Differences between swine and human hearts were found in the chordae tendineae papillary muscle junction. In the human heart the collagen bundles showed a more organized arrangement, forming a meshwork with the fibers disposed in approximately orthogonal angles, whereas in the swine heart the fibers were randomly disposedinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.22 n.4 20042004-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000400005en10.4067/S0717-95022004000400005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chordae tendineae Architecture Human Pigs Scanning electron microscopy
spellingShingle	Chordae tendineae Architecture Human Pigs Scanning electron microscopy Wang Gusukuma,Luciana Prates,José Carlos Smith,Ricardo Luiz CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION
description	Chordae tendineae architecture and their junction with papillary muscle were studied with scanning electron microscopy, comparing human and swine hearts. Papillary muscles with the corresponding chordae tendineae were obtained from human and pig (Sus scrofa) hearts after exposition of the left ventricle cavity, fixed with 4% formaldehyde. The specimens were sectioned in small samples and divided in four groups, a control one and the others submitted to digestion in a solution of 2.5% sodium hypochlorite in saline solution during 5, 10 and 15 minutes respectively. The specimens were washed and fixed in 1% osmium tetroxide in cacodylate buffer, kept in 1% tannic acid for 30 minutes, dehydrated and critical point dried, mounted and sputtered with gold. The specimens were examined and documented in a JEOL 5200 scanning electron microscope. The human and swine chordae tendineae have similar architecture: both are covered by the endothelium which was in continuity with the papillary muscles, the inner layers are composed by longitudinal and oblique collagen bundles intermingled with elastic fibers. Differences between swine and human hearts were found in the chordae tendineae papillary muscle junction. In the human heart the collagen bundles showed a more organized arrangement, forming a meshwork with the fibers disposed in approximately orthogonal angles, whereas in the swine heart the fibers were randomly disposed
author	Wang Gusukuma,Luciana Prates,José Carlos Smith,Ricardo Luiz
author_facet	Wang Gusukuma,Luciana Prates,José Carlos Smith,Ricardo Luiz
author_sort	Wang Gusukuma,Luciana
title	CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION
title_short	CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION
title_full	CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION
title_fullStr	CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION
title_full_unstemmed	CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION
title_sort	chordae tendineae architecture in the papillary muscle insertion
publisher	Sociedad Chilena de Anatomía
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000400005
work_keys_str_mv	AT wanggusukumaluciana chordaetendineaearchitectureinthepapillarymuscleinsertion AT pratesjosecarlos chordaetendineaearchitectureinthepapillarymuscleinsertion AT smithricardoluiz chordaetendineaearchitectureinthepapillarymuscleinsertion
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CHORDAE TENDINEAE ARCHITECTURE IN THE PAPILLARY MUSCLE INSERTION

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