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Chapter 6 Review
The Ear
| Term | Definition |
|---|---|
| TM | Tympanic membrane |
| PE | Polyethylene |
| ENT | Ear, nose, and throat |
| BAER | Brainstem auditory evoked response |
| BAEP | Brainstem auditory evoked potential |
| myring/o, tympan/o | Eardrum |
| salping/o | Tube |
| -acusis | Hearing condition |
| cerumin/o | Wax |
| aur/I, ot/o | Ear |
| aer/o | Air or gas |
| acous/o, audi/o | Hearing |
| Internal (inner) ear or labyrinth | Receives and passes sound vibrations through semicircular canals and vestibule to spiral organ (organ of Corti) within the cochlea |
| Auditory (Eustachian) tube | Connects with pharynx (throat) to maintain equal air pressure |
| Vibrations | Next transmitted to oval window, stimulating auditory fluids in the internal ear |
| Sound waves | Reach tympanic membrane which transmits sound vibrations to auditory ossicles |
| Middle ear | Region between external acoustic meatus and internal ear; includes tympanic membrane |
| External acoustic meatus | Passageway inward toward tympanic membrane |
| Otology | A subspecialty of otorhinolaryngology, involving the study and treatment of the ear, nose, and throat (ENT) |
| Eustachian tube | Tube connecting the middle ear to the pharynx (throat); also called the auditory tube |
| Perilymph | Fluid that fills the bony labyrinth of the internal ear |
| Endolymph | Fluid within the membranous labyrinth of the internal ear |
| Otorrhagia | Bleeding from the ear |
| Otorrhea | Purulent draining from the car |
| Vertigo | A turning round; dizziness |
| Deafness | General term for partial or complete loss of hearing |
| Otitis externa | Inflammation of the external acoustic meatus |
| Otitis media | Inflammation of the middle ear |
| Mixed hearing loss | Combination of sensorineural and conductive hearing loss |
| Sensorineural hearing loss | Hearing impairment caused by lesions or dysfunction of the cochlea (auditory) nerve |