Nerve endings of filliform, fungiform and vallate papillae of dorsal tongue mucosa of White-lipped peccary (Tayassu pecari): Neurohistological observations

The neurohistologic observations were performed using the specimens prepared by Winkelmann and Schmitt silver impregnation method. The tissues were fixed in 10% formalin solution and sections of 40µm thickness were obtained by Leica Cryostat at -30ºC. The sections of dorsal mucosa of White-lipped pe...

Full description

Saved in:
Bibliographic Details
Published in:Pesquisa Veterinária Brasileira 2009-04, Vol.29 (4), p.281-285
Main Authors: Watanabe, Ii-sei, Guimarães, Juliana Plácido, Boleta, Sebastião Aparecido, Almeida, Sonia Regina Yokomizo, Righeti, Martha Maria, Santos, Tatiana Carlesso, Miglino, Maria Angélica, Kfoury Junior, José Roberto
Format: Article
Language:English
Subjects:
VETERINARY SCIENCES
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The neurohistologic observations were performed using the specimens prepared by Winkelmann and Schmitt silver impregnation method. The tissues were fixed in 10% formalin solution and sections of 40µm thickness were obtained by Leica Cryostat at -30ºC. The sections of dorsal mucosa of White-lipped peccary tongue showed numerous filliform and fungiform papillae, and two vallate papillae on the caudal part. The epithelial layer revealed queratinized epithelial cells and the connective tissue papillae of different sizes and shapes. Thick nerve fiber bundles are noted into the subepithelial connective tissue of the papillae. The connective tissue of fungiform and vallate papillae contained numerous sensitive nerves fibers bundles forming a complex nerve plexus. As observações neuro-histológicas foram realizadas utilizando amostras preparadas segundo o método de impregnação por prata de Winkelmann e Schmitt. Os tecidos foram fixados em solução de formol a 10% e seções de 40µm de espessura foram obtidas em criostato Leica -30ºC. As seções da mucosa dorsal da língua de queixada revelaram numerosas papilas filiformes, fungiformes e duas papilas valadas sobre a parte caudal. A camada epitelial revelou células epiteliais queratinizadas e papilas de tecido conjuntivo de diferentes tamanhos e formas foram observadas. Espessos feixes de fibras nervosas são notados no tecido conjuntivo subepitelial das papilas. O tecido conjuntivo das papilas fungiformes e valadas contêm numerosos feixes de nervos de fibras sensíveis formando um plexo nervoso complexo.
ISSN:0100-736X
1678-5150
0100-736X
DOI:10.1590/S0100-736X2009000400001