click below
click below
Normal Size Small Size show me how
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 |