EML Chapter 13 Ear

ear

organ of hearing & balance, includes the external ear, middle ear, & labyrinth or inner ear

external ear

consists of the auricle & external auditory canal

external auditory canal

short tube that ends at the tympanic membrane

middle ear

consists of tympanic membrane & the tympanic cavity containing ossicles

tympanic membrane

semitransparent membrane that separates the external auditory canal & the middle ear cavity, transmits sound vibrations to the ossicles ( eardrum)

ossicles

bones of the middle ear that carry sound vibrations

eustachian tube

passage between the middle ear & the pharynx, equalizes air pressure on both sides of the tympanic membrane

labyrinth

bony spaces within the temporal bone of the skull made up of 3 distinct parts, the cochlea, semicircular canals, & vestibule

cochlea

coiled portion of the inner ear containing the sensory organ for hearing

mastoid bone

portion of the temporal bone of the skull posterior & inferior to each auditory canal

semicircular canals & vestibule

sensory organs of balance containing receptors & endolymph

audi/o

hearing

aur/i

ear

cochle/o

cochlea

labyrinth/o

labyrinth

mastoid/o

mastoid bone

myring/o

tympanic membrane

ot/o

ear 2

staped/o

stapes

tympan/o

middle ear

vestibul/o

vestibule

electr/o

electricity, electrical activity

myc/o

fungus

py/o

pus

-sclerosis

hardening

mastoiditis

inflammation of the mastoid bone

otalgia

pain in the ear

otopyorrhea

discharge of pus in the ear

otorrhea

discharge from the ear

myringoplasty

surgical repair of the tympanic membrane

myringotomy

incision into the tympanic membrane

tinnitus

ringing in the eat

otitis media

inflammation of the middle ear

audiogram

record of hearing

electrocochleography

process of recording the electrical activity in the cochlea

otoscope

instrument used for visual examination of the ear

typmanometer

instrument used to measure middle ear

aural

pertaining to the ear

OM

otitis media