Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)

The frontal muscle is formed by a complex of contractile elements which compose the set of facial muscles responsible for the expression of emotions. In view of its functional characteristics the frontal muscle consists of a mixture of high (type I) and low oxidative (type II) muscle fibres. The obj...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hebling,André, Scabora,José Eduardo, Esquisatto,Marcelo Augusto Marretto
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2009
Materias:	Morphometry Frontal muscle Fibre type Connective tissue
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100032
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-95022009000100032
record_format	dspace
spelling	oai:scielo:S0717-950220090001000322009-06-24Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)Hebling,AndréScabora,José EduardoEsquisatto,Marcelo Augusto Marretto Morphometry Frontal muscle Fibre type Connective tissue The frontal muscle is formed by a complex of contractile elements which compose the set of facial muscles responsible for the expression of emotions. In view of its functional characteristics the frontal muscle consists of a mixture of high (type I) and low oxidative (type II) muscle fibres. The objective of the present study was to determine the area, diameter, and relative volume occupied by each fibre type in frontal muscles of Norfolk rabbits using nicotinamide adenine dinucleotide tetrazolium reductase (NADH-TR) histochemistry combined with morphometry. In addition, the connective tissue area (endomysium) and the number of blood vessels per fibre were evaluated. Female rabbits ranging in age from 6 to 8 months and weighing 2.8 to 3.1 kg were used. Four quadrants of samples from 12 animals were analysed. Type IIB fibres occupied the largest area compared to the other fibre types. The fibre diameter and relative volume were similar among the different fibre types identified by NADH-TR staining. No significant difference in the number of vessels per fibre was observed between the different fibre types. The endomysial area occupied the smallest area among the parameters analyzed. These findings demonstrated the intense activity of this muscle in the facial architecture of the animal. However, the low oxidative type II fibres predomination indicates more prone to muscle fatigue. The present findings may contribute to the study of myopathies involving this muscle.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.27 n.1 20092009-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100032en10.4067/S0717-95022009000100032
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Morphometry Frontal muscle Fibre type Connective tissue
spellingShingle	Morphometry Frontal muscle Fibre type Connective tissue Hebling,André Scabora,José Eduardo Esquisatto,Marcelo Augusto Marretto Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)
description	The frontal muscle is formed by a complex of contractile elements which compose the set of facial muscles responsible for the expression of emotions. In view of its functional characteristics the frontal muscle consists of a mixture of high (type I) and low oxidative (type II) muscle fibres. The objective of the present study was to determine the area, diameter, and relative volume occupied by each fibre type in frontal muscles of Norfolk rabbits using nicotinamide adenine dinucleotide tetrazolium reductase (NADH-TR) histochemistry combined with morphometry. In addition, the connective tissue area (endomysium) and the number of blood vessels per fibre were evaluated. Female rabbits ranging in age from 6 to 8 months and weighing 2.8 to 3.1 kg were used. Four quadrants of samples from 12 animals were analysed. Type IIB fibres occupied the largest area compared to the other fibre types. The fibre diameter and relative volume were similar among the different fibre types identified by NADH-TR staining. No significant difference in the number of vessels per fibre was observed between the different fibre types. The endomysial area occupied the smallest area among the parameters analyzed. These findings demonstrated the intense activity of this muscle in the facial architecture of the animal. However, the low oxidative type II fibres predomination indicates more prone to muscle fatigue. The present findings may contribute to the study of myopathies involving this muscle.
author	Hebling,André Scabora,José Eduardo Esquisatto,Marcelo Augusto Marretto
author_facet	Hebling,André Scabora,José Eduardo Esquisatto,Marcelo Augusto Marretto
author_sort	Hebling,André
title	Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)
title_short	Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)
title_full	Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)
title_fullStr	Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)
title_full_unstemmed	Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)
title_sort	muscle fibre types and connective tissue morphometry in frontal muscle of norfolk rabbits (oryctolagus cuniculus)
publisher	Sociedad Chilena de Anatomía
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100032
work_keys_str_mv	AT heblingandre musclefibretypesandconnectivetissuemorphometryinfrontalmuscleofnorfolkrabbitsoryctolaguscuniculus AT scaborajoseeduardo musclefibretypesandconnectivetissuemorphometryinfrontalmuscleofnorfolkrabbitsoryctolaguscuniculus AT esquisattomarceloaugustomarretto musclefibretypesandconnectivetissuemorphometryinfrontalmuscleofnorfolkrabbitsoryctolaguscuniculus
_version_	1718444649715073024

Muscle Fibre Types and Connective Tissue Morphometry in Frontal Muscle of Norfolk Rabbits (Oryctolagus cuniculus)

Ejemplares similares