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61 Cards in this Set

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pinna
auricle (little ear); projected part of the external ear
external auditory canal
external passage for sounds collected from the pinna to the tympanum
cerumen
a waxy substance secreted by glands located thru-out the external canal
tympanic membrane (TM)
eardrum; drumlike structure that receives sound collected in the external auditory canal and amplifies it thru the middle ear
malleus
hammer; first of the tress auditory ossicles of the middle ear
incus
anvil; middle of the three auditory ossicles of the middle ear
stapes
stirrup; last of the three auditory ossicles of the middle ear
eustachian tube (auditory tube)
tube connecting the middle ear to the pharynx
oval window
membrane that covers the opening between the middle ear and inner ear
inner ear
structures and liquids that relay sound waves to the audiotry nerve fibers on a path to the brain for interpretation of sound
labyrinth
maze; inner ear consisting of bony and membranous passages
cochlea
coiled tubular structure of the inner ear that contains the organ of Corti
perilymph
fluid that fills the bony labyrinth of the inner ear
endolymph
fluid within the cochlear duct of the inner ear
organ of Corti
organ located in the cochlea; contains receptors (hair cells) that receive vibrations and generate nerve impulses for hearing
vestibule
middle part of the inner ear in front of the semilunar canals and behind the cochlea that contains the utricle and the saccule
utricle
larger of two sacs within the membranous labyrinth of the vestibule in the inner ear
saccule
smaller of two sacs within the membranous labyrinth of the vestibule in the inner ear
semicircular canals
three canals within the inner ear that contain specialized receptor cells that generate nerve impulses with body movement
anacusis
total hearing loss
otalgia
ear ache
otodynia
ear ache
otorrhagia
bleeding from the ear
otorrhea
purulent drainage from the ear
paracusis
impaired hearing
tinnitus
a jingling; ringing or buzzing in the ear
vertigo
a turning around; dizziness
otitis externa
inflammation of the external auditory canal
cerumen impaction
excessive buildup of wax in the ear, ofter reducing hearing acuity, esp. in elderly persons
myringitis
inflam of the eardrum
tympanitis
inflam of eardrum
otits media
inflam of the middle ear
aerotitis media
inflam of the middle ear from changes in atmospheric pressure; ofter occurs in freq air travel
eustachian obstruction
blockage of the eustachian tube usually as a result of infection, as in otits media
labrinthitis
inflam of the labyrinth
otosclerosis
hardening of the bony tissue in the ear
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 dysfuction of the cochlea of auditory nerve
presbyacusis
hearing impairment in old age
presbycusis
hearing impairment in old age
audiometry
process of measuring hearing
audiometer
instrument to measure hearing
audiogram
record of hearing measurement
audiologist
the health prof. who specializes in the study of hearing impairments
auditory acuity testing
physical assessment of hearing; useful in differentiating between conductive and sensorineural hearing loss
tuning fork
two pronged, forklike inst. that vibrates when struck; used to test hearing, esp. bone conduction
otoscopy
use of an otoscope to examine the external auditory canal and tympanic membrane
tympanometry
measurement of the conductibility of the tympanic membrane and ossicles of the middle ear by monitoring the response to external airflow pressures
microsurgury
surgery with the use of a microscope used in delicate tissue such as the ear
myringotomy
incision into the eardrum, most often for insertion of a small polyethylene (PE) tube to keep the canal open and prevent fluid buildup, such as occurs in otitis media
otoplasty
surgical repair of the external ear
stapedectomy
excision of the stapes to correct otosclerosis
tympanoplasty
vein graft of a scarred tympanic membrane to improved sound conduction
ear lavage
irrigation of the external ear canal, often to remove excessive buildup of cerumen
ear instillation
introduction of a medicated solution into the external canal, usually administered by drop or drops in the affected ear or ears:
AD (auris dextris)
AS (auris sinistra)
AU (auris unitas)
antibiotic
drug that inhibits the growth of or destroys microorganisms; used to treat diseases caused by bacteria
antihistamine
drug that blocks the effects of histamine
histamine
a regulatory body substance released in allergic rxns causing swelling and inflam of tissues; seen in hay fever and urticaria (hives)
anti-inflammatory
a drug that reduces inflam
decongestant
a drug that reduces congestion and swelling of membranes, such as those of the nost and eustachian tube in an infection