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24 Cards in this Set
- Front
- Back
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choroid is heavily ____, highly ____ ____ ____
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pigmented - vascular connective tissue
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choroid is the ____ layer in the ____ ____ of the eyeball
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middle - posterior segment
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choroid 2 functions
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provides nutrients for the retina + sclera - absorbs light + prevents back reflection
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choroid location
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between sclera + retina
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what tunic does the choroid , ciliary body + iris comprise
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vascular (uvea) tunic
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the sclera anteriorly becomes the
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cornea
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sclera layer 2 functions
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anchor site for extrinsic eye muscles - protects + shapes eyeball
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what is the anchor site for extrinsic eye muscles
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sclera
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bipolar cells relay information to
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ganglion cells
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cone function
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provides high-acuity color vision
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pigmented layer is the ____, single layer of pigmented epithelial cells resting on ____ membrane
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outer - bruch's
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Pigmented layer 2 functions
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absorb light + prevent it from scattering in the eye
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pigmented layer location is in contact with the ____ of the vascular tunic and extends ____ to cover the ____ ____ and the posterior part of the ____
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choroid - anteriorly - ciliary body - iris
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inner, transparent neural layer of retina is composed of
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photoreceptors - bipolar cells - ganglion cells
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neural layer of retinal extends ____ to the ____ margin of the ____ ____
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anteriorly - posterior - ciliary body
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inner neural layer function
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photoreception + transmission of impulses
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3 components that make up the vascular (uvea) tunic
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choroid - ciliary body - iris
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ciliary body is a thick ring of ____ composed mostly of ____ muscle fibers and ____ epithelium that encircles the lens
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tissue - smooth - glandular
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the ciliary body attaches to the lens by
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suspensory ligaments
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ciliary body controls
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the shape + thickness of lens
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what is the most anterior of the uvea
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iris
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iris location
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between cornea + lens + continuous with ciliary body
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the iris is made up of ____ ____ & of circularly arranged ____ ____ fibers
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pigment cells - smooth muscle
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iris acts as an adjustable diaphragm which ____ the amount of light reaching the ____ through its round central opening called the ____
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regulate - retina - pupil
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