Chapter 11 - The Ear
Terms
undefined, object
copy deck
- acous/o
- hearing
- audi/o
- hearing
- aer/o
- air or gas
- aur/i
- ear
- ot/o
- ear
- cerumin/o
- wax
- salping/o
- eustachian (or uterine) tube
- tympan/o
- eardrum
- myring/o
- eardrum
- -acusis
- hearing condition
- pinna
- auricla (little ear); projected part of the external ear
- exterior auditory canal
- external passage for sounds collected from the pinna to the tympanum
- cerumen
- a waxy substance secreted by glands located throughout the external canal
- tympanix membrane
- eardrum
- malleus
- hammer, first of 3 middle ear auditory ossicles
- incus
- anvil, second of 3 middle ear auditory ossicles
- stapes
- stirrup, third of 3 middle ear auditory ossicles
- eustachian tube
- tube connecting the middle ear to the pharynx
- auditory tube
- tube connecting the middle ear to the pharynx
- oval window
- membrance that covers the opening between the middle ear and 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 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 the receive vibrations and generte 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
- uticle
- larger of 2 sacs within the membraneous labyrinth of the bestibule in the inner ear
- saccule
- smaller of 2 sacs within the membraneous labyrinth of the bestibule 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
- earache
- otodynia
- earache
- 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 round; dizziness
- otitis externa
- inflammation of the external auditory canal
- cerumen impaction
- excessive buildup of wax in ear, often reducing hearing acuity, especially in elderly persons
- myringitis
- inflammation of eardrum
- tympanitis
- inflammation of eardrum
- 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
- eustachian obstruction
- blockage of the eustachian tube usually as a result of infection, as in otitis media
- labyrinthitis
- inflammation of the labyrinth
- otosclerosis
- hardening of the bone 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
- sesorineural hearing loss
- hearing impairment caused by lesions or dysfunction of the cochlea or 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 professional 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 instrument that vebrates when struck used to test hearing especially bone conduction
- otoscopy
- use of an otoscope to examine the external auditory canal and tympanic membrance
- tympanometry
- measurement of the conductibility of the tympanic membrance and ossicles of the middle ear by monitoring the response to external airflow pressures
- microsurgery
- 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 tube to keep the canal open and prevent fluid buildup
- otoplasty
- surgical repair of outer ear
- stapedectomy
- excision of the stapes to correct otosclerosis
- tympanoplasty
- vein graft of a scarred tympanic membrane to improve sound conduction
- ear lavage
- irrigation of the exterenal ear canal
- ear instillation
- introduction of a medicated solution into the external canal, usually administered by drop in affected ears
- antibiotic
- drug that inhibits the growth of or destroys microorganisms; used to treat diseases cased by bacteria
- antihistamine
- drug that blocks the affects of histamine
- histamine
- a regulatory body substance released in allergic reactions, causing swelling and inflammation of tissues, seen in hay fever and urticaria (hives)
- anti-inflammatory
- a drug that reduces inflammation
- decongestant
- a drug that reduces congestion and swelling of membranes, such as those of the nose and eustachian tube in an infection