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21 Cards in this Set
- Front
- Back
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The Uvea
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The Vascular layer of the eye. Three layers posteior to anterior 1 The Choroid 2 The Ciliary Body 3 The Iris |
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The Choroid
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Lies between the Sclera and the Retina from the optic disc to the ora serrata 5 layers 1 Epichoroid 2 Haller's layer 3 Sattler's layer 4 Choriocapillaris 5 Bruch's membrane |
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Epichoroid/Suprachoroid
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Outer most layer of the Choroid. Mostly flatted layers of elastic fibers which allow nutrients to pass through the Sclera
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Haller's Layer
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Consist mainly of Large Veins
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Sattler's Layer
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Consist Mainly of small Arteries
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Choriocapillaris
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a fine mesh of capillaries which supply nutrients to the outer layers of the retina
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Bruch's membrane
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a thin membrane divisible into 2 parts 1 outer layer: Elastic Lamina 2 inner layer: Cuticular-forms basement membrane for the retinal pigment epithelium Allows nutrients' to pass to the retina |
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The Ciliary Body
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a triangular section extending from the anterior end of the choroid to the root of the iris
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Pars Plana
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smooth surface of the ciliary body
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Corona-ciliaris/pars plaica
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corrugated anterior surface of the ciliary body 2mm wide which consist of 70-80 radiating ridges known as the ciliary processess
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The ciliary muscles
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Brucke's is longitudinal Muller's is circular its function is to contract and relax the zonular fibers. this results in altered tension on the lens allowing it to change shape |
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The Stroma in the ciliary body
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a loose net rich in pigments and blood vessels.
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Ciliary epithelium
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inner most layer two layers of cubical cells, both are concerned with the aqueous production |
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The Iris
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a thin circular disc in the frontal plane & perforated near its center by the pupil |
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Iris zones
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anterior surface is divided into two parts the pupillary zone and the ciliary zone, they are divided by a wavy lie known as the collarette
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Iris layers
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Anterior border/Anterior endothelium Stroma Posterior Membrane Posterior Epithelium (anterior & posterior) |
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Anterior Border/Anterior endothelium
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a single layer of flattened cells, missing over crypts Crypts allow aqueous to enter and exit |
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Stroma of the iris
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Consist of the Sphincter pupillae muscle, vessels & pigment cells which determine the color of your eyes more pigment= brown eyes less pigment = blue eyes |
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Sphincter muscle
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is located in the pupillary zone and when it contracts the pupil gets smaller
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posterior membrane
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a thin layer of muscle fibers constituting the Dilator pupillar muscle
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Posterior Epithelium
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two layers (anterior & posterior) of highly pigmented cells
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