EYE
Vision is one of the most specialized of your 5 senses. The eyeball moves as a result of 6 muscles attached around it (2 of these muscles are illustrated below: the lateral rectus and medial rectus muscles).
The annotated structures of the eye are explained in the Table below the illustration.
A cavity of the eye filled with aqueous humor, a fluid that provides oxygen, glucose, and proteins |
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Layer rich in blood vessels that supply the eye tissues with oxygen and nutrients |
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Ciliary body |
Changes the shape of the lens, which adjusts the eye's focus |
Transparent membrane that covers the sclera and lines the insides of the eyelids |
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Cornea and lens |
Focuses light |
A depression in the retina where cones (photoreceptor cells) are concentrated and vision is most acute. |
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Colored part of the eye |
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Round, flat structure where nerve fibers from the retina converge |
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Transmits information about images to the brain |
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Contains light-sensitive nerve cells |
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White, outer layer of the eyeball |
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Transparent gel that fills the main cavity of the eye |
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