324Lecture23 eye - Special Receptor Organs The Eye Eye -...

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Special Receptor Organs
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The Eye Eye - three layers a) tunica fibrosa, external layer (sclera, cornea) b) tunica vasculosa, middle layer (uvea) c) tunica interna, inner layer (retina)
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The Eye Tunica fibrosa - outer layer; 1) sclera (opaque, posterior 5/6) 2) cornea (transparent, anterior 1/6) Sclera - three layers: a) episclera - outer fibro-elastic layer continuous with Tenon's Capsule of the orbit. Covered by conjunctiva on anterior globe up to the cornea b) sclera proper - middle DICT layer c) Suprachoroidal lamina (lamina fusca) - inner pigmented areolar CT layer. Few blood vessels in the sclera.
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Cornea Transparent, ~0.5mm thick with a smooth epithelial surface. Highly refractive; Cornea - five layers: a) outer non-cornified stratified squamous epithelium. - microvilli, microplicae, tear film (7 μ m thick) b) Bowman's Membrane - microfibrillar outer layer of substantia propria, cell free. c)
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This note was uploaded on 01/04/2012 for the course BIO 324 taught by Professor Crawford during the Spring '09 term at Western Kentucky University.

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324Lecture23 eye - Special Receptor Organs The Eye Eye -...

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