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64 Cards in this Set

  • Front
  • Back
three layers of the eye
sclera, choroid, retina
transparent part of the sclera
cornea
extension of the cornea
lens
ability of the lens to change shape
accommodation
cavity in front of the lens
anterior cavity
liquid in the anterior cavity
aqueous humor
cavity behind the lens
posterior cavity
liquid in the posterior cavity
vitreous humor
when the vitreous builds up and cant drain
glaucoma
when the lens has lost its ability to change shape
presbyopia
Loss of hearing
presbycusis
Layer of blood vessels
Choroid
The substance under the choroid that makes your pupil look black
Melanin
pigmented portion of our eye in the middle of the choroid
the iris
A net of specialized nerve cells that are stimulated by light rays.
retina
rods vs. cones
Rods - detects shades of light, not color.
Cones - makes you see color, red blue and green cones
Responsible for central vision
macula lutea
Outside the macula
Peripheral vision
Pit in the macula lutea
Fovea centralis- point of sharpest visual accuity
Outside the macula
Only rods
collection of axons from all the photo receptor cells in the retina.
Optic nerve
Point at which the optic nerve leaves the eyeball
Optic disc, "blind spot"
T or F the cornea changes shape
F
nearsightedness
myopia
farsightedness
hyperopia
eye chart
snellen
person cant see color
color blindness
test for color blindness
Ishihara
Defect in the curvature of the cornea
astigmatism
eyeball doesn’t stay steady, wiggles.
nystagmus
If the eye is off the “line.” Aligned right or left.
Strabismus
cross eyed
Esotropia
Where the eye is pointing outward. A type of strabismus
Expotropia
weakness in the vision of one eye that is otherwise normal. “lazy eye.”
Amblyopia
“Weak eyes.” Eye strain
Asthenopia
The visible part of the ear
Pinna / auricle
The three parts of he pinna
Lobe, tragus, myringa
three parts of the outer ear
Pinna
External auditory canal / meatus
Eardrum / tympanum
three bones connected to the tympanum
auditory ossicles
the auditory ossicles in order
Malleus / hammer (outer)
Incus / anvil
Stapes / stirrup
ossification of the ossicles. Impairs one’s hearing
Otosclerosis
a diminution of hearing due to age.
Presbycusis
Extension of the middle ear cavity above the ossicles
Antrum
Lower extention of the middle ear cavity becomes the
Eustachian tube
controls pressure in the middle ear
Eustachian tube
What's the inner ear calld
labyrinth
Two parts of the labyrinth
Chochlea, vestibular apparatus
The chochlea goes down and around and ends up where?
fenestra ovalis
flulid inside the chochlea
endolymph
The true organ of hearing- strip of tissue in the cochlea
organ of Corti
8th cranial nerve
chochlear nerve or auditory nerve
what's responsible for equilibrium?
vestibular apparatus
two pouches below the semi-circular canals of the vestibular apparatus
saccule and the utricle
The semicircular canals convey information about
rotational movement
The saccule and the utricle convey information about
up and down, front and back, side to side movement
little stones on top of this bulb covered with jellly at the end of the saccule
Otoliths
Allows sound waves to escape from the cochlea into the middle ea
round window
smallest striated muscle in the body. Attached to the stapes. Stabilizes the stapes. Prevents over vibration of the stapes.
stapedius
a condition of heightened sound
hyperacusis
ringing in the ears. Symptom
Tinnitus
loudness of the sound. Measured in decibels
amplitude
sharpness of the sound. High or low. (frequency measured in Hertz) determined how frequently the sound waves pass over a point.
pitch
qulity of the sound
timbre
ear, nose, and throat doctorq
Otorhinolaryngologist