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specialsenses vocab1
Special Senses vocab week 1
| Question | Answer |
|---|---|
| accomidation | normal adjustment of the eye to focus on objects from far to near |
| anterior chamber | area behind cornea and infront of the lens and iris |
| aqueos humor | fluid produced by ciliary body and found in the anterior chamber |
| biconvex | two surfaces that are rounded, elevated, and curved evenly like a sphere |
| chamber | space |
| choroid | middle, vascular layer of the eye between retina and sclera |
| ciliary body | structure surrounding the lens that conects the choroid and iris |
| cone | photoreceptor cell in retina that transforms light energy into a nerve impulse |
| conjunctiva | delicate membrane lining the undersurface of the eyelids and covering the anterior eyelid |
| cornea | fibrous transparent layer of clear tissue that extends over the anterior portion of the eyeball |
| fovea centralis | tiny pit or depresson in the retina that is the region of clearest vision |
| iris | pigmented layer that opens and closes to allow more or less light into the eye |
| lens | transparent, biconvex body behind the pupil of the lens, it bends light rays to bring them into focus |
| macula | yellowish region on the retina lateral to and slightly below the optic disc |
| optic chiasm | point at which optic nerve fibers cross in the brain |
| optic disc | region at the back of the eye where optic nerve meets retina...blind spot |
| optic nerve | cranial nerve carrying impulses from the retina to the brain |
| pupil | central opening of the eye, surrounded by the iris, through which light rays pass |
| refraction | bending of light rays by the cornea, lens and fluids of the eye to bring the rays into focus on the retina |
| retina | light sensitive nerve cell layer of the eye containing photorecepter cells |
| rod | photorecepter cell of the retina essential for vision in dim light and peripheral vision |
| sclera | tough, white outer coat of the eyeball |
| thalamus | relay center of the brain |
| vitreous humor | soft, jelly like material behind the lens in the vitreous chamber; maintains the shape of eye |
Created by:
a1h12
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