眼---英-组织学和胚胎学上课讲义.ppt

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1、眼-英-组织学和胚胎学eyeballpupillensirisCiliary bodyOptic nervemaculacorneascleraretinachoroidcornea Corneal epi.:nonkeratinized stratified squamous Corneal epi.:nonkeratinized stratified squamous Corneal epi.:nonkeratinized stratified squamous Corneal epi.:nonkeratinized stratified squamous epi.,5-6 layers

2、of cells.epi.,5-6 layers of cells.epi.,5-6 layers of cells.epi.,5-6 layers of cells.Bowmans membraneBowmans membraneBowmans membraneBowmans membrane：anterior basement membrane,a anterior basement membrane,a anterior basement membrane,a anterior basement membrane,a homogeneous-appearing layer on whic

3、h the corneal homogeneous-appearing layer on which the corneal homogeneous-appearing layer on which the corneal homogeneous-appearing layer on which the corneal epi.rests.epi.rests.epi.rests.epi.rests.Corneal stroma:composed of thin lamellae each Corneal stroma:composed of thin lamellae each Corneal

4、 stroma:composed of thin lamellae each Corneal stroma:composed of thin lamellae each lamella consists of parallel bundles of collagen lamella consists of parallel bundles of collagen lamella consists of parallel bundles of collagen lamella consists of parallel bundles of collagen fibrils.No blood or

5、 lymphatic vessels.fibrils.No blood or lymphatic vessels.fibrils.No blood or lymphatic vessels.fibrils.No blood or lymphatic vessels.descemets membranedescemets membranedescemets membranedescemets membrane：posterior basement membrane posterior basement membrane posterior basement membrane posterior

6、basement membrane,is the basal lamina of corneal endothelial cells.,is the basal lamina of corneal endothelial cells.,is the basal lamina of corneal endothelial cells.,is the basal lamina of corneal endothelial cells.Separates the corneal endothelium from the adjacent Separates the corneal endotheli

7、um from the adjacent Separates the corneal endothelium from the adjacent Separates the corneal endothelium from the adjacent corneal stroma.corneal stroma.corneal stroma.corneal stroma.Corneal endotheliumCorneal endotheliumCorneal endotheliumCorneal endothelium：a single layer of squamous a single la

8、yer of squamous a single layer of squamous a single layer of squamous cells covering the surface of the cornea that faces cells covering the surface of the cornea that faces cells covering the surface of the cornea that faces cells covering the surface of the cornea that faces the anterior chamber.P

9、rovides for metabolic the anterior chamber.Provides for metabolic the anterior chamber.Provides for metabolic the anterior chamber.Provides for metabolic exchange between the cornea and aqueous humor.exchange between the cornea and aqueous humor.exchange between the cornea and aqueous humor.exchange

10、 between the cornea and aqueous humor.Cormeal epitheliumAnterior basement membraneCorneal stromaPosterior basement membraneCorneal endotheliumscleraIs an opaque layer that consists Is an opaque layer that consists predominantly of dense CT.predominantly of dense CT.The corneoscleral limbus:is the tr

11、ansitional The corneoscleral limbus:is the transitional zone between the cornea and sclera.An zone between the cornea and sclera.An abrupt transition from the avascular cornea to abrupt transition from the avascular cornea to the well-vascularized sclera occurs here.the well-vascularized sclera occu

12、rs here.Sclera venous sinus:in the irisocorneal angle Sclera venous sinus:in the irisocorneal angle contains the apparatus for the outflow of contains the apparatus for the outflow of aqueous humor which is produced by the aqueous humor which is produced by the ciliary processes.ciliary processes.sc

13、leraAnterior chamberScleral venous sinusTrabecular meshwork irisiris1.anterior layer：a discontinuous layer of fibroblasts and melanocyte.2.stroma：LCT,highly vascularized and with abundant pigmented cells.constrictor pupillae muscle.3.epi.:anterior-myoepithelium,dilator pupillae muscle.4.posterior-pi

14、gment epithelial cells.lPupil locate in the center.lAnterior chamber：between the iris and the cornea.lPosterior chamber：between the iris and vitreous body.iris前房PosteriorPosteriorchamberchamberConstrictorConstrictorPupillae MPupillae MAnteriorAnteriorchamberchamberCiliary bodyIs the thickened anteri

15、or portion of the vascular coat and is located between the iris and choroid.Ciliary muscleThe stromaEpithelial layerCiliary processCiliary processlenslensretinaRepresent the innermost layer of the eyeRepresent the innermost layer of the eyelNeural retina:inner layer that contains photoreceptors.lRPE

16、,the outer layer that rests on and attached to the choroid.Neural retinaNonvisual part,Nonvisual part,Optic part.Optic part.Optic papilla:where the optic nerve joins the Optic papilla:where the optic nerve joins the retina.Is devoid of photoreceptors.A blind retina.Is devoid of photoreceptors.A blin

17、d spot in the visual field.spot in the visual field.Fovea centralis:a shallow depression Fovea centralis:a shallow depression located lateral to the optic papilla.Is the area located lateral to the optic papilla.Is the area of greatest visual acuity.of greatest visual acuity.Macula lutea:a yellow-pi

18、gmented zone Macula lutea:a yellow-pigmented zone surrounds the fovea.surrounds the fovea.pigment epi.Ganglion CBipolar CCone CRod CsclerachoroidPigmented Epi.Ganglion C retinaNuclei of visusl CExternal processesPigmented epi.Visual cellVisual cell（HEHE）Macula lutea&Macula lutea&fovea centralisfovea

19、 centralisOptic papillaLens capsuleEpi.Lens fiberCrystalline lensCrystalline lensIs a transparent,avascular,biconvex Is a transparent,avascular,biconvex structure.structure.The components of the lens:The components of the lens:lens capsule,a thick basal lamina lens capsule,a thick basal lamina subca

20、psular epi.,a cuboidal layer of subcapsular epi.,a cuboidal layer of cells.on the anterior face of the cells.on the anterior face of the lenslens lens fibers,derived from lens fibers,derived from subcapsular epi.subcapsular epi.Vitreous bodyVitreous bodyVitreous body Is the transparent jelly-like substance that fill the vitreous chamber in the posterior segment of the eye.此课件下载可自行编辑修改，仅供参考！此课件下载可自行编辑修改，仅供参考！感谢您的支持，我们努力做得更好！谢谢感谢您的支持，我们努力做得更好！谢谢