Eyes and Ears Flashcards by cyndi bird

accommodation

normal adjustment of the eye to focus on objects from far to near f

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anterior chamber

area behind cornea and in front of the lens and iris

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aqueous humor

fluid produced by the ciliary body and found in the anterior chamber

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biconvex

the lens of the eye is a biconvex body. It has two rounded, elevated surfaces

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choroid

middle vascular layer of the eye

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cone

light receptor responsible for colour and central vision

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conjunctiva

membrane covering the eyeball

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cornea

fibrous transparent layer of clear tissue that extends over the anterior portion of the eyeball

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fovea centralis

tiny pit or depression in the retina

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fundus of the eye

posterior inner part of the eye

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iris

pigmented portion of the eye

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lens

transparent biconvex body behind the pupil of the eye

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macula

small oval region on the retina near the optic disc

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optic chiasm

point at which the optic nerve fibers cross in the brain

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optic disc

region at the back of the eye where the optic nerve meets the retina

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optic nerve

cranial nerve carrying impulses from the retina to the brain

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pupil

central opening of the eye

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refraction

bending of light rays (takes most of your eye)

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retina

light sensitive part of the eye containing photoreceptor nerve cells

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rod

photoreceptor cell responsible for dim light and peripheral vision

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sclera

tough, white outer coat of the eyeball

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thalamus

relay center in the brain where the optic nerve fibers pass through

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vitreous humor

soft jelly like material behind the lens in the vitreous chamber

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aque / o

water

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blephar /o

eye lid

conjunctiv / o

conjunctiva

cor / o

pupil

corne / o

cornea

cycl / o

ciliary body or muscle of the eye

dacry / o

tears or tear duct

ir / o, irid / o

iris

kerat / o

cornea

lacrim / o

tears

ocul / o

eye

opt / o, optic / o

eye, vision

palpebr / o

eyelid

papill / o

optic disc, nipple like

phac / o, phak / o

lens of the eye

pupill / o

pupil

retin / o

retina

scler / o

sclera

uve / o

uvea , vascular layer of the eye

vitre / o

glassy

ambly / o

dull or dim

dipl / o

double

glauc / o

grey

mi / o

smaller or less

mydr / o

widen or enlarge

nyct / o

night

phot / o

light

presby / o

old age

scot / o

darkness

xer / o

dry

-opia

vision

-opsia

vision

-trophia

to turn

astigmatism

defective curvature of the cornea or the lens of the eye

hypertropia

farsightedness

myopia

nearsightedness

presbyopia

Impairment of vision as a result of old age

cataract

clouding of the lens, decreased vision

chalazion

small, hard, cystic mass (granuloma) of the eyelid

diabetic retinopathy

disease of the retina caused by diabetes mellitus

glaucoma

increased intraocular pressure results in damage to the retina and optic nerve with loss of vision

trabecul / o

small beam, rod or plank of wood

hordeolum

localized, purulent, inflammatory staphylococcal infection of a sebaceous oil producing gland in the eyelid

macular degeneration

progressive damage to the macula of the retina

nystagmus

repetitive movements of one or both eyes

retinal detachment

two layer of the retina separate form each other

strabismus

abnormal deviation of the eye

enucleation

removal of the entire eyeball

AMD

age-related macular degeneration

both eyes

visual acuity

visual field

auditory canal

channel that leads from pinna to eardrum

auditory meatus

auditory canal

auditory nerve fibers

carry impulses from inner ear to brain

auditory tube

channel between middle ear and nasopharynx: eustachian tube

auricle

the protruding part of the external ear

cerumen

earwax

cochlea

spirally or snail shaped tube in the inner ear

endolymph

fluid within the labyrinth of the inner ear

eustachian tube

auditory tube

incus

second ossicle (small bone) of the middle ear. Incus means anvil

labyrinth

maze like series of canals of the inner ear

malleus

first ossicle of the middle ear. malleus means hammer

organ of Corti

auditory receptor found in cochlea

ossicle

small bone of the ear

oval window

membrane between middle and inner ear

perilymph

fluid contained in the labyrinth

pinna

auricle, flap of the ear

semi circular canals

passages of the inner ear associated with maintaining equilibrium

stapes

third ossicle, means stirrup

tympanic membrane

eardrum

vestibule

central cavity of the labyrinth

acous /o

hearing

audi / o

hearing

audit / o

hearing

aur / o, auricul / o

ear

cochle / o

cochlea

mastoid / o

mastoid process

myring / o

eardrum or tympanic membrane

ossicul / o

ossicle

ot / o

ear

salping / o

eustachian tube, auditory tube

staped / o

stapes

tympan / o

typanic membrane

vestibul / o

vestibule

-aucusis or -cusis

hearing

-meter

instrument to measure

-otia

ear condition

acoustic neuroma

benign tumor arising from the acoustic vestibulocochlear nerve in the brain

cholesteatoma

collection of skin cells and cholesterol in a sac within a sac in the middle ear

Meniere disease

disorder of the labyrinth

otitis media

inflammation of the middle ear

otosclerosis

hardening of the bony tissue of the ear

tinnitus

sensation of noises in the ears without external sound

vertigo

sensation of irregular or whirling motion either of oneself or of external objects

audiometry

testing of the hearing

Rinne test

testing of ear conduction using a tuning fork