眼---英-组织学和胚胎学PPT课件

.,1,Theeye,.,2,Layersoftheeyecorneoscleralcoat:fibrouslayer,includethesclera,thewhiteportion,andthecornea,thetransparentportion.vascularcoat:includethechoroid,thestromaoftheciliarybodyandiris.retina:theinnerlayer,includeanouterpigmentepi.Theinnerneuralretina,andtheepi.Oftheciliarybodyandiris.,.,3,eyeball,.,4,cornea,Cornealepi.:nonkeratinizedstratifiedsquamousepi.,5-6layersofcells.Bowmansmembrane：anteriorbasementmembrane,ahomogeneous-appearinglayeronwhichthecornealepi.rests.Cornealstroma:composedofthinlamellaeeachlamellaconsistsofparallelbundlesofcollagenfibrils.Nobloodorlymphaticvessels.descemetsmembrane：posteriorbasementmembrane,isthebasallaminaofcornealendothelialcells.Separatesthecornealendotheliumfromtheadjacentcornealstroma.Cornealendothelium：asinglelayerofsquamouscellscoveringthesurfaceofthecorneathatfacestheanteriorchamber.Providesformetabolicexchangebetweenthecorneaandaqueoushumor.,.,5,.,6,sclera,IsanopaquelayerthatconsistspredominantlyofdenseCT.Thecorneosclerallimbus:isthetransitionalzonebetweenthecorneaandsclera.Anabrupttransitionfromtheavascularcorneatothewell-vascularizedscleraoccurshere.Scleravenoussinus:intheirisocornealanglecontainstheapparatusfortheoutflowofaqueoushumorwhichisproducedbytheciliaryprocesses.,.,7,sclera,.,8,Anteriorchamber,Scleralvenoussinus,Trabecularmeshwork,.,9,iris,anteriorlayer：adiscontinuouslayeroffibroblastsandmelanocyte.stroma：LCT,highlyvascularizedandwithabundantpigmentedcells.constrictorpupillaemuscle.epi.:anterior-myoepithelium,dilatorpupillaemuscle.posterior-pigmentepithelialcells.,Pupillocateinthecenter.Anteriorchamber：betweentheirisandthecornea.Posteriorchamber：betweentheirisandvitreousbody.,.,10,iris,.,11,Ciliarybody,Isthethickenedanteriorportionofthevascularcoatandislocatedbetweentheirisandchoroid.,Ciliarymuscle,Thestroma,Epitheliallayer,.,12,.,13,retina,Representtheinnermostlayeroftheeye,Neuralretina:innerlayerthatcontainsphotoreceptors.RPE,theouterlayerthatrestsonandattachedtothechoroid.,.,14,Neuralretina,Nonvisualpart,Opticpart.Opticpapilla:wheretheopticnervejoinstheretina.Isdevoidofphotoreceptors.Ablindspotinthevisualfield.Foveacentralis:ashallowdepressionlocatedlateraltotheopticpapilla.Istheareaofgreatestvisualacuity.Maculalutea:ayellow-pigmentedzonesurroundsthefovea.,.,15,.,16,retina,.,17,Visualcell（HE）,.,18,Maculalutea&foveacentralis,.,19,Opticpapilla,.,20,Lenscapsule,Epi.,Lensfiber,Crystallinelens,.,21,Crystallinelens,Isatransparent,avascular,biconvexstructure.Thecomponentsofthelens:lenscapsule,athickbasallaminasubcapsularepi.,acuboidallayerofcells.ontheanteriorfaceofthelenslensfibers,derivedfromsubcapsularepi.,.,22