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eye and ear anatomy
| Question | Answer |
|---|---|
| cornea | clear transparent, first thing light passes through, focuses light |
| choroid | light sponge, collects light rays |
| ciliary bodies/process | surrounds lens |
| iris | colored fibrous layer that controls the pupil size |
| retina | takes up three fourths of eye is made up of this, vision lands directly on it |
| optic disc | all body vessels go through it |
| vitreous body | back ball of fluid in eye |
| aqueous humor | fluid pocket in from of eye |
| lens | refracts light up to the middle age, held in the sespensitory ligament |
| suspensory ligament | outer pockets that cilliary bodies attached to from the lens |
| optic nerve | attaches eye, and carries impulses to brain |
| pupil | hole in iris, shrinks and expands due to amount of light |
| canal of shlemn vein | hole that leads to internal ear |
| sclera | whites of eyes |
| astigmatism | irregular shape of cornea |
| glaucoma | when canal of shlemn vein gets this happens progressively over time hurts. |
| cones | color of vision makes up 1 of 20 |
| rods | only lets you see black and whites of eye that makes up 20 |
| phobia's ventralis | 90 percent of cones are located here |
| middle ear | captures sound3 bones passing vibrations physically |
| outer ear | captures sound |
| inner ear | directs vibrations to auditory nerve |
| auricle | sticks out , bumps determining to where sound goes |
| external auditory meatus | hole down through the ear, that vibraes |
| tympanic membrane | passes vibrations |
| tympanic cavity | leads down to eustaition tube that leads to throat |
| malleus | hammer |
| incus | anvil |
| stapes | stirrup |
| middle ear 3 parts action | physically pass vibration along, only if they touch |
| oval window | to vestibule fluid |
| semicircular canal | has liquid in it hat controls balance |
| cochlea | fluid inside tubes contains round window |
| round window | is made up of hairs cells in tectorial membrane helping to determine pitch |
| macular degeneration | gradually losing good vision until blindness |
| maculalutea | area of best vision |