眼-英-组织学和胚胎学

1、The eye 第一页，共二十四页。Layers of the eyecorneoscleral coat : fibrous layer, include the sclera, the white portion ,and the cornea, the transparent portion. vascular coat : include the choroid , the stroma of the ciliary body and iris . retina : the inner layer, include an outer pigment epi. The inner neu

2、ral retina, and the epi. Of the ciliary body and iris.第二页，共二十四页。eyeballpupillensirisCiliary bodyOptic nervemaculacorneascleraretinachoroid第三页，共二十四页。corneaCorneal epi.: nonkeratinized stratified squamous epi.,5-6 layers of cells.Bowmans membrane：anterior basement membrane ,a homogeneous-appearing lay

3、er on which the corneal epi.rests.Corneal stroma: composed of thin lamellae each lamella consists of parallel bundles of collagen fibrils. No blood or lymphatic vessels.descemets membrane：posterior basement membrane ,is the basal lamina of corneal endothelial cells. Separates the corneal endothelium

4、 from the adjacent corneal stroma. Corneal endothelium：a single layer of squamous cells covering the surface of the cornea that faces the anterior chamber. Provides for metabolic exchange between the cornea and aqueous humor. 第四页，共二十四页。Cormeal epitheliumAnterior basement membraneCorneal stromaPoster

5、ior basement membraneCorneal endothelium第五页，共二十四页。scleraIs an opaque layer that consists predominantly of dense CT.The corneoscleral limbus : is the transitional zone between the cornea and sclera . An abrupt transition from the avascular cornea to the well-vascularized sclera occurs here. Sclera ve

6、nous sinus: in the irisocorneal angle contains the apparatus for the outflow of aqueous humor which is produced by the ciliary processes .第六页，共二十四页。sclera第七页，共二十四页。Anterior chamberScleral venous sinusTrabecular meshwork第八页，共二十四页。 irisanterior layer：a discontinuous layer of fibroblasts and melanocyte

7、.stroma：LCT, highly vascularized and with abundant pigmented cells. constrictor pupillae muscle.epi. : anterior-myoepithelium, dilator pupillae muscle. posterior-pigment epithelial cells.Pupil locate in the center.Anterior chamber：between the iris and the cornea.Posterior chamber：between the iris an

8、d vitreous body. 第九页，共二十四页。iris前房PosteriorchamberConstrictorPupillae MAnteriorchamber第十页，共二十四页。Ciliary bodyIs the thickened anterior portion of the vascular coat and is located between the iris and choroid. Ciliary muscleThe stromaEpithelial layer第十一页，共二十四页。Ciliary processlens第十二页，共二十四页。retinaRepres

9、ent the innermost layer of the eyeNeural retina: inner layer that contains photoreceptors.RPE, the outer layer that rests on and attached to the choroid.第十三页，共二十四页。Neural retinaNonvisual part, Optic part. Optic papilla: where the optic nerve joins the retina . Is devoid of photoreceptors. A blind sp

10、ot in the visual field. Fovea centralis : a shallow depression located lateral to the optic papilla. Is the area of greatest visual acuity.Macula lutea: a yellow-pigmented zone surrounds the fovea.第十四页，共二十四页。 pigment epi.Ganglion CBipolar CCone CRod C第十五页，共二十四页。sclerachoroidPigmented Epi.Ganglion C

11、retina第十六页，共二十四页。Nuclei of visusl CExternal processesPigmented epi.Visual cell（HE）第十七页，共二十四页。Macula lutea & fovea centralis第十八页，共二十四页。Optic papilla第十九页，共二十四页。Lens capsuleEpi.Lens fiberCrystalline lens第二十页，共二十四页。Crystalline lensIs a transparent, avascular, biconvex structure.The components of the len

12、s: lens capsule, a thick basal lamina subcapsular epi., a cuboidal layer of cells. on the anterior face of the lens lens fibers, derived from subcapsular epi.第二十一页，共二十四页。Vitreous bodyVitreous body第二十二页，共二十四页。Vitreous body Is the transparent jelly-like substance that fill the vitreous chamber in the posterior segment of the eye.第二十三页，共二十四页。内容总结The eye。corneoscleral