%0 Journal Article
%T SCANNING ELECTRON MICROSCOPIC STUDY OF THE TONGUE OF CHINCHILA (Chinchilla laniger) ESTUDIO AL MICROSCOPIO ELECTRONICO DE BARRIDO DE LA LENGUA DE CHINCHILLA (Chinchilla laniger)
%A Marcelo Martinez
%A Francisco E. Martinez
%A Patr¨ªcia F. F. Pinheiro
%A Camila C. D. Almeida
%J Revista chilena de anatom¨ªa
%D 2000
%I Scientific Electronic Library Online
%X The three-dimensional structure of the lingual papillae and the connective tissues of the tongue of chinchila were observed by scanning electron microscopy. The NaOH cell maceration method were used to remove the epithelial layer to visualize the connective tissue architecture. The dorsum of the tongue is covered by keratinized stratified squamous epithelium and possessed four types of papillae: filiform, fungiform, foliate and vallate. SEM images demonstrated the epithelial cell surfaces with microridges, distinct intercellular borders and taste pores. The connective tissue core of filiform papillae of the anterior and intermediate part of the tongue consisted of two or three rod-like protrusions while on the posterior part demonstrated large base with several apical protrusions. The lamina propria of the fungiform papillae were columnar and vallate papillae presented a central groove surrounded by numerous connective tissue papillae; the foliate papillae demonstrated elliptical holes surrounded by small connective tissue papillae A trav¨¦s de la microscop¨ªa electr¨®nica de barrido se observ¨® la estructura tridimensional de las papilas linguales y el tejido conectivo de la lengua de chinchilla. Se utiliz¨® la t¨¦cnica de maceraci¨®n celular con NaOH para remover la capa epitelial y visualizar la arquitectura del tejido conectivo. El dorso de la lengua est¨¢ cubierto por epitelio escamoso estratificado queranitizado y posee cuatro tipos de papilas: filiformes, fungiformes, foliadas y valadas. Las im¨¢genes de microscop¨ªa de barrido mostraron superficies de las c¨¦lulas epiteliales con micropuentes distintos de los bordes intercelulares y poros linguales. El tejido conectivo central de las papilas filiformes de las partes anterior e intermedia de la lengua, presentaban dos o tres protrusiones semejantes a v¨¢stagos, mientras que en la parte posterior se observ¨® una amplia base con varias protrusiones apicales. La l¨¢mina propia de las papilas fungiformes era columnar y las papilas valadas presentaron una muesca central rodeada por numeroso tejido conectivo papilar; las papilas foliadas presentaban orificios el¨ªpticos rodeados por escaso tejido conectivo papilar
%K Epitelio
%K Tejido conectivo
%K Lengua
%K Chinchilla laniger
%K SEM
%K Epithelium
%K Connective Tissue
%K Tongue
%K Chinchila
%K SEM
%U http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98682000000100007