UNCSOP Med Terms Chapter 13 - Ear
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Created by:
jfletchernc on October 25, 2010
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29 terms
Terms | Definitions |
|---|---|
 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 |
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