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MT Ear Chp 13

Medical Terminology Chapter 13 -EAR

pinna auricle (little ear); projected part of the external ear
external auditory meatus external passage for sounds collected from the pinna to the typmpanum
cerumen waxy substance secreted by glands located throughout the external canal
tympanic membrane (TM) eardrum
malleus hammer; first of the three auditory ossicles of the middle ear
incus anvil; middle of the three auditory ossicles of the middle ear
stapes stirrup; last of the three auditory ossicles of the middle ear
eustachian tube (throat), auditory tube tube connecting the middle ear to the pharynx
mastoid process projection of the temporal bone located behind the ear containing air cells that connect to the middle ear (masto=breast)
oval window membrane that covers the opening between the middle ear and inner ear
inner ear structures and liquids that relay sound waves to the auditory nerve fibers on a path to the brain for interpretation of sound
labyrinth maze; inner ear consisting of bony and membranous labyrinths
cochlea coiled tubular structure of the inner ear that contains the organ of Corti (cochlea=snail)
perilymph fluid that fills the bony labyrinth of the ear
endolymph fluid within the cochlear duct of the inner ear (labyrinth)
organ of Corti organ located in the cochlea that contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing
vestibule middle part of the inner ear in front of the semicircular canals and behind the cochlea that contains the utricle and saccule
utricle larger of two sacs within the membraneous labyrinth of the vestibule in the inner ear
saccule smaller of two sacs within the membranous labryinth of the vestibule in the inner ear
semicircular canals three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement
otalgia, otodynia earache
otorrhagia bleeding from the ear
otorrhea purulent drainage from the ear
tinnitus a jingling, ringing, or buzzing in the ear
vertigo a turning round; dizziness
acous/o, audi/o hearing
aero/o air or gas
aur/i, ot/o ear
cerumin/o wax
salping/o eustachian tube or uterine tube
tympan/o, myring/o eardrum
-acusis hearing condition
otitis externa inflammation of the external auditory meatus
cerumen impaction excessive buildup of was in the ear
myringitis, tympanitis inflammation of the eardrum
otitis media inflammation of the middle ear
aerotitis media inflammation of the middle ear for changes in atmospheric pressure
otosclerosis hardening of the bony tissue in the ear
mastoiditis inflammation of the mastoid process
eustachian obstruction blockage of the mastoid process
acoustic neuroma benign tumor on the auditory nerve
aplasia condition of absence or malformation of inner ear structures
labyrinthitis inflammation of the labyrinth
Meniere disease disorder of the inner ear due to an excessive buildup of endolymphatic fluid
deafness general term for partial or complete hearing loss
conductive hearing loss hearing impairment caused by interference with sound
sensorineural hearing loss hearing impairment by lesions or dysfunction
mixed hearing loss combination of sensorineural and conductive hearing loss
presbyacusis, presbycusis hearing impairment in old age
audiometry processs of measuring hearing
audiometer instrument to measure hearing
audiogram record of hearing measurement
audiologist person who specializes in the study of hearing impairments
auditory acuity testing physical assessment of hearing
tuning ford 2 pronged fork like instrument that vibrates when struck
brainstem auditory evoked potentials (BAEP) electrodiagnostic testing using computerized equipment to measure involuntary responses to sound within the auditory nervous system
pneumatic otoscopy otoscopic observation of the tympanic membrane as air is released into the external auditory meatus (canal)
tympanometry measurement of the compliance and mobility of the tympanic membrane and ossicles of the middle ear by monitoring the resonse after exposeure to external airflow pressures
microsurgery surgery with the use of a microscope
myringotomy, tympanostomy incision into the eardrum, most often for insertion of a small metal or plastic tube, to keep the meatus open, avoiding fluid build up as that which occurs as a result of otits media
otoplasty surgical repair of the outer ear
stapedectomy excision of the stapes to correct otosclerosis
tympanoplasty vein graft of a scarred tympanic membrane to improve sound conduction
auditory prothesis any internal or external devise that improves or substitutes for natural hearing
hearing aid external amplifying device designed to improve hearing
cochlear implant electronic device implanted in the cochlea that provides sound perception to patients with severe or profound hearing loss in both ears
ear lavage irrigation of the external ear canal, commonly done to remove excessive buildup of cerumen
ear instillation introduction of a medicated solution into the external canal
antibiotic drug that inhibits the growth or destroys microorgranisms
antihistamine drug that blocks the effects of histamine
histamine regulating body substance released in excess during allergic reactions
anti-inflammatory drug that reduces inflammation
decongestant drug that reduces congestion and swelling of membranes
Created by: mh