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28 Cards in this Set
- Front
- Back
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Cornea
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Bends incoming light and focuses it
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Sclera
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Covers and protects the eyeball
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Choroid
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Nourishes retina and absorbs light not absorbed by retinal photoreceptors
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Ciliary body
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Adjusts curvature of the lens
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Suspensory ligament
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Series of fibers that connect the ciliary body of the eye with the lens, holding it in place
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Lens
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Focuses incoming light on the retina at the back of the eye and regulates it
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Iris
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Adjusts amount of incoming light
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Pupil
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Opening in the middle of the iris through which light passes to the back of the eye
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Retina
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Absorbs light and converts it into impulses
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Fovea centralis
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Responsible for the highest visual activity (consists of densely packed cone cells)
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Optic disk
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Where the axons of the optic nerve exit the eye → No photoreceptors → “Blind spot”
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Optic nerve
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Transmit nerve impulses from the retina to the brain
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Vitreous chamber
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Space in the eyeball between the lens and the retina that is occupied by the vitreous body
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Aqueous humor
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Nourishes and cushions the cornea and lens
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Vitreous humor
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Transmits light to the retina
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Superior rectus
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(1) Elevates eye and turns it medially
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Lateral rectus
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(2) Moves eye laterally
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Inferior oblique
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(3) Elevates eye/ turns it laterally
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Inferior rectus
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(4) Depresses and adducts the eye
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Medial rectus
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(5) Moves eye medially
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Superior oblique
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(6) Depresses eye and turns it laterally
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Conjunctiva
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Thin membrane that covers the inner surface of the eyelid and the white part of the eyeball (the sclera)
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Conjunctivitis
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Inflammation of the conjunctiva; Causes white part of the eye to be red
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Cataract
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Clouding of the lens of the eye (due to the break-down of proteins in the lens)
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Lacrimal gland
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Continually secretes tears that moisten, lubricate, and protect the surface of the eye
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Structures of the Eye
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6 extrinsic eye muscles
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Locate the lacrimal gland
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