Download - Curso Histologia 02 Epitelios
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Epitelios
Antonio E. Serrano PhD. MT.
5 Septiembre 2011
@Xideral
xideral.com
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Microscopio Optico – Inclusión en Parafina hasta 7 micrones. Tincionesquimicas
Microscopio Electronico de Transmisión : Transmission Electron Microscopy (TEM) – Inclusión en plástico, tinciones con metales pesados(electron densos),
Microscopio Electronico de Barrido: Scanning Electron Microscopy(SEM) – Secado critico, cubierta con oro.
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Light Microscopy
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TEM
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SEM
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Epitelios
Epitelio Simple
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Escamoso
Simple
Mesotelio
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Escamoso simple (Mesotelio) en TEM
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Simple escamoso, Endotelio (En)
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Simple Escamoso, Endotelio (Ed) por TEM
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Capilar (célula endotelial) por TEM
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Epitelio Simple Cuboidal (Sección longitudinal) section)
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Simple Cuboidal (Sección transversal)
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Simple Cuboidal por TEM
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Cilíndrico Simple con
células Mucinosas
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Cilíndrico Simple
con células
Mucinosas
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Célula
Mucinosa
Teñida con
PAS
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Cilindrico Simple
con Células
Mucinosas (mu)
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Cilindrico Simple
con Celulas
Mucinosas
Secretoras
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Cilindrico Simple
con células
Mucinosas
Secretoras
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Epitelio
Epitelio Estratificado
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Ciliado Pseudoestratificado con Células Mucinosas
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Epitelio Pseudoestratificado Ciliado con Células Mucinosas,
(Respiratorio)
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Estratificado Escamoso no queratinizado
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Epitelio de Transición
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Epitelio de Transición
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Estratificado Escamoso Queratinizado (delgado)
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Estratificado Escamoso Queratinizado(thick)
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Uniones Celulares
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Junctional Complexes
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Tight Junctions (Zonula Occludens) por TEM
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Tight Junctions (Zonula Occludens) Por
Criofractura
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Tight Junction
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Gap Junction por TEM
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Gap Junction
Connexin
moleculesOpen pores for
ions, molecules, etc
2 nM gap
between
membranes
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TEM de Zonula
Adherens
TEM de Desmosoma
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Uniones Adherentes, coloreadas por TEM
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Desmosoma con miofibras por TEM
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Estructura de un Desmosoma
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Hemi-Desmosoma por TEM
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Elementos del Citoesqueleto
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Epitelio Glandular
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Glandulas Serosas, con ductos.
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Unidad Secretora Serosa (aumento mayor)
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Glandula Mucosa con ducto
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Mixto con Semilunas Serosas