Morphological and Histochemical Analysis of the Human Vestibular Fold

A morphological and histochemical study of the human vestibular fold was carried out using routine histological techniques. Seven µm-thick histo logical sections stained with hematoxylin-eosin (HE) and Callej a showed the presence of elastic collagen fibers and seromucous glands in the vestibular fo...

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Autores principales:	Guida,Heraldo Lorena, Zorzetto,Neivo Luiz
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2007
Materias:	Larynx Vestibular fold Morphology
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300010
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spelling	oai:scielo:S0717-950220070003000102007-10-30Morphological and Histochemical Analysis of the Human Vestibular FoldGuida,Heraldo LorenaZorzetto,Neivo Luiz Larynx Vestibular fold Morphology A morphological and histochemical study of the human vestibular fold was carried out using routine histological techniques. Seven µm-thick histo logical sections stained with hematoxylin-eosin (HE) and Callej a showed the presence of elastic collagen fibers and seromucous glands in the vestibular fold. Muscle fibers forming the ventricular muscle were also identified. Ultrastructural analyses of the epithelial layer by scanning electron microscopy (SEM) revealed ciliated cells and gland ducts opening on the epithelial surface. Histochemical analyses were performed on ventricular muscles submitted to nicotinamide-adenine-dinucleotide tetrazolium reductase (NADH-TR), succinate dehydrogenase (SDH), and myofibrillar adenosine triphosphatase (mATPase) reactions. Based on these reactions, it was observed that the muscle is formed by three types of muscle fibers: slow-twitch oxidative (SO), fast-twitch oxydative glycolytic (FOG) and fast-twitch glycolytic (FG) fibers distributed in a mosaic pattern. The fiber frequency was 22.7%, 69.9% and 7.4%, respectively. The higher frequency of SO and FOG fibers characterized the muscle as having aerobic metabolism and resistance to fatigue. The ventricular muscle was considered fast. The study of the neuromuscular junctions performed after nonspecific esterase reaction showed that they are of the en-plaque type and have multiple occurrences in the ventricular muscleinfo:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.25 n.3 20072007-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300010en10.4067/S0717-95022007000300010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Larynx Vestibular fold Morphology
spellingShingle	Larynx Vestibular fold Morphology Guida,Heraldo Lorena Zorzetto,Neivo Luiz Morphological and Histochemical Analysis of the Human Vestibular Fold
description	A morphological and histochemical study of the human vestibular fold was carried out using routine histological techniques. Seven µm-thick histo logical sections stained with hematoxylin-eosin (HE) and Callej a showed the presence of elastic collagen fibers and seromucous glands in the vestibular fold. Muscle fibers forming the ventricular muscle were also identified. Ultrastructural analyses of the epithelial layer by scanning electron microscopy (SEM) revealed ciliated cells and gland ducts opening on the epithelial surface. Histochemical analyses were performed on ventricular muscles submitted to nicotinamide-adenine-dinucleotide tetrazolium reductase (NADH-TR), succinate dehydrogenase (SDH), and myofibrillar adenosine triphosphatase (mATPase) reactions. Based on these reactions, it was observed that the muscle is formed by three types of muscle fibers: slow-twitch oxidative (SO), fast-twitch oxydative glycolytic (FOG) and fast-twitch glycolytic (FG) fibers distributed in a mosaic pattern. The fiber frequency was 22.7%, 69.9% and 7.4%, respectively. The higher frequency of SO and FOG fibers characterized the muscle as having aerobic metabolism and resistance to fatigue. The ventricular muscle was considered fast. The study of the neuromuscular junctions performed after nonspecific esterase reaction showed that they are of the en-plaque type and have multiple occurrences in the ventricular muscle
author	Guida,Heraldo Lorena Zorzetto,Neivo Luiz
author_facet	Guida,Heraldo Lorena Zorzetto,Neivo Luiz
author_sort	Guida,Heraldo Lorena
title	Morphological and Histochemical Analysis of the Human Vestibular Fold
title_short	Morphological and Histochemical Analysis of the Human Vestibular Fold
title_full	Morphological and Histochemical Analysis of the Human Vestibular Fold
title_fullStr	Morphological and Histochemical Analysis of the Human Vestibular Fold
title_full_unstemmed	Morphological and Histochemical Analysis of the Human Vestibular Fold
title_sort	morphological and histochemical analysis of the human vestibular fold
publisher	Sociedad Chilena de Anatomía
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300010
work_keys_str_mv	AT guidaheraldolorena morphologicalandhistochemicalanalysisofthehumanvestibularfold AT zorzettoneivoluiz morphologicalandhistochemicalanalysisofthehumanvestibularfold
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Morphological and Histochemical Analysis of the Human Vestibular Fold

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