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Morphological and biometric characteristics of the pectinate muscles and the taenia sagittalis of the right atrium in the human heart
Barriga, Ana; Henriquez, Jorge; Olave, Enrique.
Afiliação
  • Barriga, Ana; Universidad Austral de Chile. Institute of Anatomy, Histology and Pathology. Chile
  • Henriquez, Jorge; Universidad de La Frontera. Faculty of Medicine. Chile
  • Olave, Enrique; Universidad de La Frontera. Faculty of Medicine. Chile
Eur. j. anat ; 23(5): 355-359, sept. 2019. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-183865
Biblioteca responsável: ES1.1
Localização: BNCS
ABSTRACT
The crista terminalis (CT) is a well-defined fibromuscular crest formed by the union of the venous sinus and the primitive right auricle, which extends along the posterolateral face of the right atrial wall. The pectinate muscles (PM) are muscular crests which extend anterolaterally from the CT to the auricle and may present in a series of variable shapes and sizes. The biggest and most prominent PM is called the taenia sagittalis (TS). PM with highly trabeculated muscle fibres predispose patients to the occurrence of arrhythmias. The present article is a descriptive study of the anatomical and biometric characteristics of the right atrium. We studied 30 hearts of adult Chilean individuals, aged between 18 and 84 years, of both sexes, with no apparent cardiac pathology, belonging to the Normal Human Anatomy Unit of the Basic Sciences Department of Universidad de La Frontera. The samples were washed with distilled water and immediately placed in formalin at 10%. The atria were first separated from the ventricles, then opened perpendicularly through the intercaval zone to give access to the interior. The distribution of pectinate muscles found, according to the classification of Loukas et al. (2008) and Siddiqui et al. (2013), was as follows Type I, 20%; Type II, 23.3%; Type III, 23.3%; Type IV, 6.7%; Type V, 6.7%; Type VI, 20%. TS was found to be present in 46.6% of the hearts examined, two or more TS in 29.8% and no TS in 23.6%. The length of the pectinate muscles is variable; the shortest are located on the medial wall. Six types of pectinate muscle patterns were observed
RESUMEN
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Assuntos
Texto completo: Disponível Coleções: Bases de dados nacionais / Espanha Base de dados: IBECS Assunto principal: Taenia / Coração / Átrios do Coração Limite: Adulto / Idoso / Feminino / Humanos / Masculino País/Região como assunto: América do Sul / Chile Idioma: Inglês Revista: Eur. j. anat Ano de publicação: 2019 Tipo de documento: Artigo Instituição/País de afiliação: Universidad Austral de Chile/Chile / Universidad de La Frontera/Chile
Texto completo: Disponível Coleções: Bases de dados nacionais / Espanha Base de dados: IBECS Assunto principal: Taenia / Coração / Átrios do Coração Limite: Adulto / Idoso / Feminino / Humanos / Masculino País/Região como assunto: América do Sul / Chile Idioma: Inglês Revista: Eur. j. anat Ano de publicação: 2019 Tipo de documento: Artigo Instituição/País de afiliação: Universidad Austral de Chile/Chile / Universidad de La Frontera/Chile
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