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23 Cards in this Set
- Front
- Back
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What watery substance fills the anterior eye cavity?
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aqueous humor
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name the marked structures
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structures of the eye
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What gel-like substance fills the posterior eye cavity?
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vitreous humor
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The ______ and ______ make up the fibrous tunic.
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cornea; sclera
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1) pinna
2) temporal bone 3) tympanic membrane 4) semi-circular canals 5) cochlea 6) vestibular nerve 7) external canal 8) hammer 9) anvil 10) stirrup 11) auditory tube |
name the marked structures
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the middle, pigmented layer of the eye
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choroid layer
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The choroid layer contains the ___ and _____ structures.
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ciliary body; iris
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white connective tissue layer of the eye
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fibrous tunic (sclera)
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modified sebaceous glands that lubricate the eye
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meibomian glands
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what is the conjuctiva?
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red lining of eyelid
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smooth muscle that attaches the lens to the iris of the eye
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ciliary body
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innermost tunic of the eye
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sensory tunic, or retina
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____ provide black and white and peripheral vision, while ____ receive color information.
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Rods; cones
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blind spot where the optic nerve leaves the eyeball
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optic disc
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area containing only cones; provides for greatest visual acuity
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fovea centralis
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similar to blood plasma; provides nutrients to lens and cornea
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aqueous humor
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Aqueous humor is reabsorbed into venous blood through the ______.
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canal of Schlemm
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What is refraction?
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bending of light rays when light passes from one medium and meets the surface of a different medium
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During accommodation for close vision, do the ciliary muscles contract or relax?
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the ciliary muscle contracts and pulls the ciliary body inward and anteriorly
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What is the clinical term for someone who has problems seeing close objects?
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Hyperopic
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What is the clinical term for someone who has problems seeing distant objects?
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Myopic
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What is the clinical name for "old person's vision" or gradual loss of accommodation with age?
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presbyopic
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The sensory hair cells of the organ of Corti are supported on the___ ____.
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basilar membrane
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