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29 terms

UNCSOP Med Terms Chapter 13 - Ear

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auricle
projected part of the external ear
external auditory meatus
external passage for sounds collected from the pinna to the tympanum
cerumen
waxy substance secreted by glands located throughout the external canal
tympanic membrane
eardrum; drum-like structure that receives sounds collected in the external auditory meatus and amplifies it through the middle ear
eustachian tube
tube connected 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
labyrinth
maze; inner ear consisting of bony and membranous labyrinths
cochlea
coiled tubular structure of the inner ear that contains the organ of Corti
otalgia
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
otitis externa
inflammation of the external auditory meatus
tympanitis
inflammation of the eardrum
otitis media
inflammation of the middle ear
otosclerosis
hardening of the bony tissues in the ear
mastoiditis
inflammation of the mastoid process; most commonly seen as a result of the spread of inflammation and infection in otitis media
acoustic neuroma
benign tumor on the auditory nerve that causes vertigo, tinnitus, and hearing loss
Meniere disease
disorder of the inner ear due to an excess buildup of endolymphatic causing episodes of vertigo, tinnitus, nausea, vomiting, and hearing; one or both ears can be affected, and attacks vary in frequency and intensity
conductive hearing loss
hearing impairment caused by interference with sound or vibratory energy in the external canal, middle ear, or ossicles
sensorineural hearing loss
hearing impairment caused by lesions or dysfunction of the cochlea or auditory nerve
audiologist
person who specializes in the study of hearing impairments
otoscopy
use of an otoscope to examine the external acoustic meatus and tympanic membrane
tympanostomy
incision into the eardrum, most often for the insertion of a small metal or plastic tube, to keep meatus open, avoiding fluid buildup as that which occurs as a result of otitis media
cochlear implant
electronic device implanted in the cochlea that provides sound perception to patients with severe or profound sensorineural hearing loss in both ears
vestibule
middle part of the inner ear in front of the semicircular canals and behind the cochlea that contains the utricle and saccule
semicircular canals
three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement
aplasia
condition of absence or malformation of inner ear structures during embryonic development, resulting in hearing loss