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Med Term Block two
The ear chapter
69
Medical
Professional
09/24/2012

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Term
acous/o
audi/o
Definition
hearing
Term
aer/o
Definition
air or gas
Term
aur/i
ot/o
Definition
ear
Term
cerumin/o
Definition
wax
Term
salping/o
Definition
eustachian tube or uterine tube
Term
tympan/o
myring/o
Definition
eardrum
Term
-acusis
Definition
hearing condition
Term
pinna
Definition
auricle (little ear)
Term
external auditory meatus or cannal
Definition
external passage
Term
cerumen
Definition
waxy substance secreted by glands in the external canal
Term
middle ear
Definition
structures in the middle of the ear that vibrate sound from the tympanic membrane to the inner ear
Term
tympanic membrane (TM)
Definition
eardrum
Term
malleus
Definition
hammer; first of the the three auditory ossicles in the middle ear
Term
incus
Definition
anvil; middle of the three auditory ossicles in the middle ear
Term
stapes
Definition
stirrup; last of the three auditory ossicles in the middle ear
Term
eustachian tube
Definition
tube connecting the middle ear to the pharynx
Term
oval window
Definition
membrane that covers the opening between the middle and inner ear
Term
inner ear
Definition
intricate, fluid filled passages that relay sound waves to the auditory nerve fibers; also sense body movement and position to maintain balance and equilibrium
Term
cochlea
Definition
coiled tubular structure of the inner ear
Term
perilymph
Definition
fluid that fills the bony labyrinth of the inner ear
Term
endolymph
Definition
fluid within the membranous labyrinth of the inner ear
Term
organ of Corti
Definition
contains receptors that receive vibrations and generate nerve impulses
Term
vestibule
Definition
middle part of the inner ear; functions to provide body balance and equilibrium
Term
utricle
Definition
larger of two sacs within the membranous labyrinth of the vestibule in the inner ear
Term
saccule
Definition
smaller of two sacs within the membranous labyrinth of the vestibule in the inner ear
Term
semicircular canals
Definition
three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement
Term
otalgia
Definition
earache
Term
otodynia
Definition
earache
Term
otorrhagia
Definition
bleeding from the ear
Term
otorhhea
Definition
purulent drainage from the ear
Term
tinnitus
Definition
ringing in the ear
Term
vertigo
Definition
dizzines
Term
otitis externa
Definition
inflammation of the external auditory meatus
Term
cerumen impaction
Definition
excessive buildup of wax in the ear
Term
myringitis
Definition
inflammation of the eardrum
Term
tympanitis
Definition
inflammation of the eardrum
Term
otitis media
Definition
inflammation of the middle ear
Term
aerotitis media
Definition
inflammation of the middle ear from changes in atmospheric pressure
Term
eustachian obstruction
Definition
blockage of the eustachian canal usually due to infection
Term
otosclerosis
Definition
hardening of the bony tissue in the ear
Term
acoustic neuroma
Definition
benign tumor on the auditory nerve that causes vertigo, tinnitus, and hearing loss
Term
Meniere disease
Definition
disorder resulting from the build up of endolymphatic fluid
Term
deafness
Definition
partial or complete loss of hearing
Term
conductive hearing loss
Definition
hearing impairment caused by interference with sound or vibratory energy in the external canal, middle ear, or ossicles
Term
sensorineural hearing loss
Definition
hearing impairment caused by lesions or dysfunction of the cochlea or auditory nerve
Term
mixed hearing loss
Definition
combination of conductive and sensorineural loss
Term
presbyacusis
Definition
hearing impairment in old age
Term
audiogram
Definition
record of hearing measurement
Term
audiologist
Definition
health professional who specializes in the study of hearing impairments
Term
auditory acuity testing
Definition
physical assessment of hearing
Term
tuning fork
Definition
used to test bone conduction to measure hearing loss
Term
brainstem auditory evoked potential (BAEP)
Definition
electrodiagnostic testing that uses computerized equipment to measure involuntary responses to sound within the auditory nervous system
Term
otoscopy
Definition
use of an otoscope to examine the external auditory canal and tympanic membrane
Term
pneumatic otoscopy
Definition
otoscopic observation of the tympanic membrane as air is released into the external auditory meatus.
Term
tympanometry
Definition
measurement of the compliance and mobility (conductibility) of the tympanic membrane by monitoring the response to external airflow pressures
Term
myringotomy
Definition
incision into the eardrum
Term
otoplasty
Definition
surgical repair of the external ear
Term
stapedectomy
Definition
excision of the stapes to correct osteosclerosis
Term
tympanoplasty
Definition
vein graft of a scarred tympanic membrane to improve sound conduction
Term
auditory prosthesis
Definition
any internal or external device that improves or substitutes for natural hearing
Term
hearing aid
Definition
external amplifying device
Term
cochlear implant
Definition
electronic device implanted in the cochlea
Term
ear lavage
Definition
irrigation of the external ear canal to remove excessive buildup of cerumen
Term
ear instillation
Definition
introduction of ear drops
Term
antibiotic
Definition
drug used to inhibit the growth of or destroys microorganisms
Term
antihistamine
Definition
drug that blocks the effects of histamine
Term
histamine
Definition
regulatory body substance released in allergic reactions
Term
antiinflammatory
Definition
drug that reduces inflammation
Term
decongestant
Definition
drug that reduces congestion and swelling of membranes
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