Chapter 13 The Ear

64 terms by ladypsalm 

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auricle (pinna)

external structure located on both sides of the head; directs sound waves into the external auditory meatus

external auditory meatus (canal)

short tube that ends at the tympanic membrane; the inner part lies within the temporal bone of the skull and contains the glands that secrete earwax (cerumen)

tympanic membrane (eardrum)

semitransparent membrane that separates the external auditory meatus and the middle ear cavity; the tympanic membrane transmits sound vibrations to the ossicles

eustachian tube

connects the middle ear and the pharynx; equalizes air pressure on bothe sides of the eardrum

labyrinth (inner ear)

bony spaces within the temporal bone of the skull; it contains the cochlea, semicircular canals, and vestibule

cochlea

is snail-shaped and contains the organ of hearing; connects to the oval window in the middle ear

semicircular canals and vestibule

contains receptors and endolymph that help the body maintain its sense of balance (equilibrium)

mastoid bone and cells

located in the skull bone behind the external auditory meatus

audi/o

hearing

aur/i, aur/o, ot/o

ear

cochle/o

cochlea

laryrinth/o

labyrinth (inner ear)

mastoid/o

mastoid bone

myring/o

tympanic membrane (eardrum)

staped/o

stapes (middle ear bone

tympan/o

tympanic membrane (eardrum), middle ear

vestibul/o

vestibule

labyrinthitis

inflammation of the labyrinth (inner ear); also called vestibular neuritis

mastoiditis

inflammation of the mastoid bone

myringitis

inflammation of the tympanic membrane (eardrum)

otalgia

pain in the ear

otomastoiditis

inflammation of the ear and the mastoid bone

otomycosis

abdnormal condition of fungus in the ear

otopyorrhea

discharge of pus from the ear

otorrhea

discharge from the ear (may be serous, bloody, consisting of pus, or containg cerebrospinal fluid)

otosclerosis

hardening of the ear (stapes) (caused by irregular bone development and resulting in hearing loss)

tympanitis

inflammation of the middle ear (also called otitis media)

acoustic neuroma

benign tumor within the auditory canal growing from the acoustic nerve (cranial nerve VIII, vestibulocochlear nerve); may cause hearing loss and may damage structures of the cerebellum as it grows

ceruminoma

tumor of a gland that secretes earwax (cerumen)

cholesteatoma

cystlike mass composed of epithelial cells and cholesterol occurring in the middle ear; may be associated with chronic otitis media

meniere disease

chronic disease of the inner ear charcterized by dizziness, ringing in the ear, and hearing loss

otitis externa

inflammation of the outer ear

otitis media (OM)

inflammation of the middle ear

presbycusis

hearing impairment in old age

tinnitus

ringing in the ears

vertigo

a sense that either one's own body (subjective vertigo) or the environment (objective vertigo) is revolving

cochlear implant

pertaining to the cochlea implant (surgically inserted prosthetic device that uses electrical currents to stimulate the auditory nerve and provide hearings)

labyrinthectomy

excision of the labyrinth

mastoidectomy

excision of the mastoid bone

mastoidotomy

incision into the mastoid bone

myringoplasty

surgical repair of the tympanic membrane

myringotomy

incision into the tympanic membrane (performed to release pus or fluid and relieve pressure in the middle ear); also called tympanocentesis

stapedectomy

excision of the stapes (performed to restore hearing in cases of otosclerosis; the stapes is replaced by a prosthesis

tympanoplasty

surgical repair (of the hearing mechanism) of the middle ear (including the tympanic membrane and the ossicles)

audiogram

(graphic) record of hearing

audiometer

instrument used to measure hearing

audiometry

measurement of hearing

otoscope

instrument used for visual examination of the ear

otoscopy

visual examination of the ear

tympanometer

instrument used to measure middle ear (function)

tympanometry

measurement (of movement) of the tympanic membrane

audiologist

one who studies and specialized in hearing

audiology

study of hearing

aural

pertaining to the ear

cochlear

pertaining to the cochlea

otologist

physician who studies and treats diseases of the ear

otology

study of the ear

otorhinolaryngologist

physician who studies and treats diseases of the ear, nose and larynx (throat); also called otolaryngologist

vestibular

pertaining to the vestibule

vestibulocochlear

pertaining to the vestibule and the cochlea

AOM

acute otitis media

EENT

eyes, ears, nose, and throat

ENT

ears, nose, throat

OM

otitis media

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