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Chapter 17:
JUST THE EAR!
| Question | Answer |
|---|---|
| auditory canal | Channel that leads from the pinna to the eardrum. |
| auditory meatus | Auditory canal. |
| auditory nerve fibers | Carry impulses from the inner ear to the brain (cerebral cortex). These fibers compose the vestibulocochlear nerve |
| auditory tube | Channel between the middle ear and the nasopharynx; eustachian tube. |
| auricle | Flap of the ear; the protruding part of the external ear, or pinna. |
| cerumen | Waxy substance secreted by the external ear; also called earwax. |
| cochlea | Snail-shaped, pirally wound tube in the inner ear; contains hearing-sensitive receptor cells. |
| endolymph | Fluid within the labyrinth of the inner ear. |
| eustachian tube | Auditory tube. |
| incus | Second ossicle (bone) of the middle ear; incus means anvil. |
| labyrinth | Maze-like series of canals of the inner ear. This includes the cochlea, vestibule, and semicircular canals. |
| malleus | First ossicle of the middle ear; malleus means hammer. |
| organ of Corti | Sensitive auditory receptor area found in the cochlea of the inner ear. |
| ossicle | Small bone of the ear; includes the malleus, incus, and stapes. |
| oval window | Membrane between the middle ear and the inner ear. |
| perilymph | Fluid contained in the labyrinth of the inner ear. |
| pinna | Auricle; flap of the ear. |
| semicircular canals | Passages in the inner ear associated with maintaining equilibrium. |
| stapes | Third ossicle of the middle ear. Stapes means stirrup. |
| tympanic membrane | Membrane between the outer and the middle ear; also called the eardrum. |
| vestibule | Central cavity of the labyrinth, connecting the semicircular canals and the cochlea. The vestibule contains two structures, the saccule and utricle, that help to maintain equilibrium. |
| acous/o | hearing |
| audi/o | hearing; the sense of hearing |
| audit/o | hearing |
| aur/o, auricul/o | ear (see also ot/o) |
| cochle/o | cochlea |
| mastoid/o | mastoid process |
| myring/o | eardrum, tympanic membrane (see also tympan/o) |
| ossicul/o | ossicle |
| ot/o | ear |
| salping/o | eustachian tube, auditory tube |
| staped/o | stapes (third bone of the middle ear) |
| tympan/o | eardrum, tympanic membrane |
| vestibul/o | vestibule |
| -acusis or -cusis | hearing |
| -meter | instrument to measure |
| -otia | ear condition |
| acoustic neuroma | Benign tumor arising from the acoustic vestibulocochlear nerve (eighth cranial nerve) in the brain. |
| cholesteatoma | Collection of skin cells and cholesterol in a sac within the middle ear. |
| deafness | Loss of the ability to hear. |
| Ménière disease | Disorder of the labyrinth of the inner ear; elevated endolymph pressure within the cochlea (cochlear hydrops) and semicircular canals (vestibular hydrops). |
| otitis media | Inflammation of the middle ear. |
| otosclerosis | Hardening of the bony tissue of the middle ear. |
| tinnitus | Sensation of noises (ringing, buzzing, whistling, booming) in the ears |
| vertigo | Sensation of irregular or whirling motion either of oneself or of external objects. |
| audiometry | Testing the sense of hearing. |
| cochlear implant procedure | Surgical insertion of a device that allows sensorineural hearing–impaired persons to understand speech. |
| ear thermometry | Measurement of the temperature of the tympanic membrane by detection of infrared radiation from the eardrum. |
| otoscopy | Visual examination of the ear canal with an otoscope |
| tuning fork test | Test of ear conduction using a vibration source (tuning fork). |
| AD | right ear (Latin, auris dextra) |
| AOM | acute otitis media |
| AS | left ear (Latin, auris sinistra) |
| EENT | eyes, ears, nose, and throat |
| ENG | electronystagmography—a test of the balance mechanism of the inner ear by assessing eye movements (nystagmus is rapidly twitching eye movement) |
| ENT | ears, nose, and throat |
| ETD | eustachian tube dysfunction |
| HEENT | head, eyes, ears, nose, and throat |
| PE tube | pressure-equalizing tube—a polyethylene ventilating tube placed in the eardrum (to treat recurrent episodes of acute otitis media) |
| SOM | serous otitis media |
| audiometer | instrument to measure hearing |
| otomycosis | fungal infection of the ear |
| Audiogram | Record of hearing using an audiometer. |
| Hyperacusis | Excessive sensitivity to sounds. |
| Macrotia | Abnormally large ears. |
| Microtia | Abnormally small ears. |
| Otopyorrhea | Discharge of pus from the ear. |
| Salpingopharyngeal | Pertaining to the eustachian tube and the throat. |
| Tympanoplasty | Surgical repair of the eardrum. |
| Vestibulocochlear | Pertaining to the vestibule and cochlea. |
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