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eye and ear anatomy

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
Created by: hwzone