眼英组织学和胚胎学.pptx

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 neural retina, and the epi. Of the ciliary body and iris.第1页/共23页第一页，共24页。 eyeballpupillensirisCiliary bodyOptic nervemaculacorneascleraretinachoroid第2页/共23页第二页，共24页。 corneaCorneal epi.: nonkeratinized stratified squamous epi.,5-6 layers of cells.Bowman’s membrane：anterior basement membrane ,a homogeneous-appearing layer 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.descemet’s membrane：posterior basement membrane ,is the basal lamina of corneal endothelial cells. Separates the corneal endothelium 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3页/共23页第三页，共24页。 Cormeal epitheliumAnterior basement membraneCorneal stromaPosterior basement membraneCorneal endothelium第4页/共23页第四页，共24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 venous sinus: in the irisocorneal angle contains the apparatus for the outflow of aqueous humor which is produced by the ciliary processes .第5页/共23页第五页，共24页。 sclera第6页/共23页第六页，共24页。 Anterior chamberScleral venous sinusTrabecular meshwork第7页/共23页第七页，共24页。 　 iris　　anterior layer：a discontinuous layer of fibroblasts and melanocyte.stroma：LCT, highly vascularized and with abundant pigmented cells. constrictor pupillae muscle.epi. : anterior-myoepithelium, dilator pupillae musc