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1、Chapter2EpithelialtissueGeneralcharacteristicsofepithelium⑴morecells,lessextracellularmatrixGeneralcharacteristicsofepithelium⑴morecells,lessextracellularmatrix⑵polarity:freesurface,lateralsurface,basalsurfacefreesurfacelateralsurfacebasalsurfaceGeneralcharacteri
2、sticsofepithelium⑴morecells,lessextracellularmatrix⑵polarity:freesurface,lateralsurface,basalsurface⑶avascularity:nobloodvessels⑷innervation:richinnerveterminals⑸function:protection,absorption……⑹classification:coveringepithelium,glandularepithelium……CoveringEpith
3、eliumPositionofthecoveringepithelium?BloodvesselbloodEsophagusSkinPositionofthecoveringepithelium?BloodvesselbloodEsophagusSkinbodysurfaceinnersurfaceofinternalcavitiesClassificationofthecoveringepithelium?SimpleStratifiedClassificationofthecoveringepithelium?⑴th
4、enumberofcelllayers---simpleandstratifiedSimpleStratifiedClassificationofthecoveringepithelium?⑴thenumberofcelllayers---simpleandstratifiedsquamouscuboidalcolunmnarpseudostratifiedsquamouscuboidaltransitionalSimpleStratifiedClassificationofthecoveringepithelium?⑴
5、thenumberofcelllayers---simpleandstratified⑵theshapeofthesufacecells---squamous,cuboidal,columnar,pseudostratified,transitionalsquamouscuboidalcolunmnarpseudostratifiedsquamouscuboidaltransitionalSimpleStratified1.Simplesquamousepitheliumsurfaceviewsideviewlayer-
6、--singlecell---flattened,scale-likenucleus----fusiform①structureStretchedpreparationSilverstainingParaffinsectioningH&Estaining1.Simplesquamousepithelium①structure②distributionheart,bloodvessels,andlymphaticchannels---endotheliumbodycavities:thoracic,pericardial,
7、abdominal---mesotheliumothers:parietallayerofrenalcapsule,etc.endotheliummesotheliumbloodvessel1.Simplesquamousepithelium①structure②distribution③function:lubrication,materialtransportation,ect.endotheliummesotheliumbloodvessel2.Simplecuboidalepitheliumlayer---sin
8、glecell---square,equalinheightandwidthnucleus----spherical,centrallypositioned①structure2.Simplecuboidalepithelium①structure②distribution:renaltubule,thyroidgl
