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34 Cards in this Set
- Front
- Back
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tunics location
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make up wall of the eyeball
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what are the 3 tunics
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fibrous - vascular - sensory
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2 fibrous tunics
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sclera (white of eyes) - cornea
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vascular tunic is rich in
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blood vessels
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3 components of the vascular tunic
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choroid - ciliary body - iris
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sensory tunic location
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retina of the eye
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what layers make up the sensory tunic
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outer pigment layer - inner neural layer
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outer pigment layer of the sensory tunic function
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prevents light from scattering
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inner neural layer is composed of
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photoreceptors - bipolar cells - ganglion cells
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inner neural layer function
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photoreception + transmission of impulses
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sclera description (2)
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white of eyes - heals fastest
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sclera tissue type
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fibrous tissue
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cornea description
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clear front eye tissue that covers iris and pupil and admits light
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choroid location
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deep to sclera
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choroid tunic type
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fibrous tunic
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ciliary body, muscle and processes
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contract and relax to control tension on suspensory ligaments
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ciliary processes produce
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aqueous humor
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suspensory ligaments change
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shape of the lens
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ora serrata location
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edge of ciliary body
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iris controls
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size of pupil
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pupil is the round ____ of the ____
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opening - iris
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pupil allows
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light to enter the eye
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anterior segment is divided by the ____ into ____ & ____ ____
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iris - anterior - posterior chambers
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posterior segment is filled with
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vitreous humor
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vitreous humor is a clear gel that binds ____
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water
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vitreous humor transmits ____, suports ____ surface of lens, & contributes to ____ pressure
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light - posterior - intraocular
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lens is used to ____ light
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focus
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macula lutea location
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thin spot in retina
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macula lutea contains
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mostly cones
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fovea centralis is the most ____ ____ & contains
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acute vision - only cones
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optic disc is the
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blind spot
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optic nerve goes to ____, allows ____ & fibers of ____ make the optic nerve
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brain - vision - retina
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central artery and vein of the ____, supplies ____
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retina - blood
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canal of schlemm drains
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off aqueous humor
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