Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly

The digastric muscle is formed by two muscle bellies: one anterior and one posterior, joined by an intermediate tendon. It is localized in the anterior cervical region. The anterior belly divides the region between the hyoid bone and the mandible into two: laterally the submandibular triangle, and m...

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Autores principales:	Liquidate,Bianca Maria, Barros,Mirna Duarte, Alves,Adriana Leal, Pereira,Celina Siqueira Barbosa
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2007
Materias:	Neck muscles Anatomy Hyoid bone
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400018
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spelling	oai:scielo:S0717-950220070004000182008-04-15Anatomical Study of the Digastric Muscle: Variations in the Anterior BellyLiquidate,Bianca MariaBarros,Mirna DuarteAlves,Adriana LealPereira,Celina Siqueira Barbosa Neck muscles Anatomy Hyoid bone The digastric muscle is formed by two muscle bellies: one anterior and one posterior, joined by an intermediate tendon. It is localized in the anterior cervical region. The anterior belly divides the region between the hyoid bone and the mandible into two: laterally the submandibular triangle, and medially the submental triangle. The anatomical variations described in the literature relate to the anterior belly and consist of differences in shape and muscle attachment. This cross-sectional cohort study had the objective of describing anatomical variations in the anterior belly of the digastric muscle. The neck regions of 10 cadavers of male adults were dissected in the Department of Morphology, between June 2004 and June 2006. The digastric muscles that presented anatomical variations were photographed using a Sony Cyber-shot DSC-T1 camera, with a Carl Zeiss Vario-Tessar lens and their bellies were measured using a universal pachymeter. Anatomical variations in the anterior bellies of the digastric muscle were observed in four individuals. Cases 1 and 4 presented a unilateral right variation, with an anomalous anterior belly. Cases 2 and 3 presented bilateral variation, with the presence of two supernumerary bellies. The anatomical variations observed on this study related only to the anterior belly, as previously described by other authors. It is important to consider the occurrence of these variations in the digastric muscle when differentiating between cervical masses and during surgical procedures on the anterior region of the neckinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.25 n.4 20072007-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400018en10.4067/S0717-95022007000400018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Neck muscles Anatomy Hyoid bone
spellingShingle	Neck muscles Anatomy Hyoid bone Liquidate,Bianca Maria Barros,Mirna Duarte Alves,Adriana Leal Pereira,Celina Siqueira Barbosa Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly
description	The digastric muscle is formed by two muscle bellies: one anterior and one posterior, joined by an intermediate tendon. It is localized in the anterior cervical region. The anterior belly divides the region between the hyoid bone and the mandible into two: laterally the submandibular triangle, and medially the submental triangle. The anatomical variations described in the literature relate to the anterior belly and consist of differences in shape and muscle attachment. This cross-sectional cohort study had the objective of describing anatomical variations in the anterior belly of the digastric muscle. The neck regions of 10 cadavers of male adults were dissected in the Department of Morphology, between June 2004 and June 2006. The digastric muscles that presented anatomical variations were photographed using a Sony Cyber-shot DSC-T1 camera, with a Carl Zeiss Vario-Tessar lens and their bellies were measured using a universal pachymeter. Anatomical variations in the anterior bellies of the digastric muscle were observed in four individuals. Cases 1 and 4 presented a unilateral right variation, with an anomalous anterior belly. Cases 2 and 3 presented bilateral variation, with the presence of two supernumerary bellies. The anatomical variations observed on this study related only to the anterior belly, as previously described by other authors. It is important to consider the occurrence of these variations in the digastric muscle when differentiating between cervical masses and during surgical procedures on the anterior region of the neck
author	Liquidate,Bianca Maria Barros,Mirna Duarte Alves,Adriana Leal Pereira,Celina Siqueira Barbosa
author_facet	Liquidate,Bianca Maria Barros,Mirna Duarte Alves,Adriana Leal Pereira,Celina Siqueira Barbosa
author_sort	Liquidate,Bianca Maria
title	Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly
title_short	Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly
title_full	Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly
title_fullStr	Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly
title_full_unstemmed	Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly
title_sort	anatomical study of the digastric muscle: variations in the anterior belly
publisher	Sociedad Chilena de Anatomía
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400018
work_keys_str_mv	AT liquidatebiancamaria anatomicalstudyofthedigastricmusclevariationsintheanteriorbelly AT barrosmirnaduarte anatomicalstudyofthedigastricmusclevariationsintheanteriorbelly AT alvesadrianaleal anatomicalstudyofthedigastricmusclevariationsintheanteriorbelly AT pereiracelinasiqueirabarbosa anatomicalstudyofthedigastricmusclevariationsintheanteriorbelly
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Anatomical Study of the Digastric Muscle: Variations in the Anterior Belly

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