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13 Cards in this Set
- Front
- Back
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Cornea
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bends light rays entering eye in order to create a clear image
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Anterior Chamber
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the space between the cornea and the iris which is filled with fluid aqueous
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Iris
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regulates amount of light entering eye
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Pupil
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the round hole in the iris. its size is automatically varied to regulate the amount of light entering the eye
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Lens
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a clear biconvex structure behind the iris which works in conjunction with the cornea to focus onto the retina.
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Ciliary Body
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secretes aqueous humor
-ciliary muscles changes lens shape |
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Zonules
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Threadlike filamentous attachments whihc hold the lens in place in the eye
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Vitreous
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the clear jelly which fills the space between the lens and the retina
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sclera
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the white tough protective outer wall of the eye
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Choroid
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contains blood vessels that nourishes the retina
absorbs light rays so taht they are not reflected |
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Retina
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thin layer of tissue composed of millions of visual cells which lines the inside back two thirds of the eye. the retina recieves lgith and sends tiny electrical impulses to the brain to give sight
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Optic nerve
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a cable like structure composed of thousands of nerve fibers which carry impulses from the retina to the brain where visual perception occurs
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Macula
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the highly developed central zone of the retina. gives critical vision for reading and discrimination small objects.
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