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PHM 315 ch 13
Ear Medical Terminology pg 415-420
| Question | Answer |
|---|---|
| acous/o | hearing |
| audi/o | hearing |
| aer/o | air or gas |
| aur/i | ear |
| ot/o | ear |
| cerumin/o | wax |
| salping/o | eustachian tube or uterine tube |
| tympan/o | eardrum |
| myring/o | eardrum |
| -acusis | hearing condition |
| external ear | pinna, external auditory meatus, cerumen |
| pinna | auricle (little ear) ; projected part of the external ear |
| external auditory meatus (canal) | external passage for sounds collected from the pinna to the tympanum |
| cerumen | waxy substance secreted by glands located throughout the external canal |
| middle ear | tympanic membrane, malleus,incus, stapes |
| tympanic membrane | eardrum; drum like structure that receives sound collected in the external auditory meatus and amplifies it through the middle ear |
| malleus | hammer; first of the 3 auditory ossicles of the middle ear |
| incus | anvil; middle of the 3 ossicles of the middle ear |
| stapes | stirrup; last of the three auditory ossicles of the middle ear |
| eustachian tube | tube connecting the middle ear to the pharynx (throat) |
| auditory tube | tube connecting the middle ear to the pharynx (throat) |
| mastoid process | projection of the temporal bone located behind the ear containing air cells that connect to the middle ear |
| oval window | membrane that covers the opening between the middle ear and the 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 |
| 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 cannals and behind the cochlea that contains the utricle and saccule |
| utricle | larger of the two sacs within the membranous labyrinth of the vestibule in the inner ear (uter=leather bag) |
| saccule | smaller of the two sacs within the membranous labyrinth of the vestibule in the inner ear (sacculus = small bag) |
| semicircular canals | three canals withinthe inner ear that contain specialized receptor cells that generate nerve impulses with body movement |
| otalgia | earache |
| 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 |
| otitis externa | inflammation of the external auditory meatus |
| cerumen impaction | excessive buildup of wax in the ear |
| myringitis | inflammation of the eardrum |
| tympanitis | inflammation of the earddrum |
| otitis media | inflammation of the middle ear |
| aerotitis media | inflammation of the middle ear from changes in atmospheric pressure, often occurs in frequent air travel |
| otosclerosis | hardening of the bony tissue 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 |
| eustachian obstruction | blockage of the eustachian tube usually as a result of infection, as in otitis media |
| acoustic neuroma | benign tumor on the auditory nerve (8th cranial nerve) that causes vertigo, tinnitus, and hearing loss |
| aplasia | condition of absence or malformation of inner ear structures resulting in hearing loss |
| labyrinthitis | inflammation of the labyrinth |
| Meniere disease | disorder of the inner ear due to an excessive buildup of endolymphatic fluid causing episodes of vertigo tinnitus N/V, and hearing loss. one or both ears may be affected and attacks vary in frequency/intensity |
| deafness | general term for partial or complete hearing loss |
| 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 |
| mixed hearing loss | combination of sensorineural and conductive hearing loss |
| presbyacusis | hearing impairment in old age |
| presbycusis | hearing impairment in old age |
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