chapter 18 ears

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chapter 18 ears
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2010-05-03 00:09:36
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chapter 18 ears
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  1. auricle (or pinna) or ear canal
    external ear
  2. separated from the external ear by the tympanic membrane; consists of three bones: malleus, incus, and stapes
    middle ear
  3. the complex inner structure of the ear: vestibule, semicircular canals, and cochlea, composing the membranes labyrinth
    tympanic membrane
  4. tympanum
    eardrum (middle ear)
  5. earwax
    cerumen
  6. a tube, lined with mucous membrane, that joins the nasopharynx and the tympanic cavity; accomplishes equalization of air pressure
    eustachian tube
  7. a benign tumor arising from the acoustic nerve in the brain. this tumor causes tinnitus, vertigo, and decreased hearing. small tumors may be surgically resected or removed by radiation therapy
    acoustic neuroma
  8. a collection of skin cells and cholesterol in a sac within the middle ear. these cystlike masses are most often the result of chronic otitis media, but may also be congenital defect. it can lead to conductive hearing loss, occulsion of the middle ear, destruction of ossicles, and inner ear erosion. symptoms include weakness of facial muscles, drainage from the affected ear, vertigo, and earache
    cholesteatoma
  9. hearing loss that occurs when the conduction of sound waves through external and middle ear to the inner ear is impaired
    conduction deafness
  10. lacking the sense of hearing; hearing impairment
    deafness
  11. inflammation of the eustachian tubes
    eustachian salpingitis
  12. a skin infection affecting the ear canal
    furunculosis
  13. cerumen (earwax) impacted firmly into the ear
    impacted cerumen
  14. inflammation of the labyrinth (inner ear); otitis interna
    labyrinthitis
  15. inflammation of the mastoid antrum and cells (of the temporal bone)
    mastioditis
  16. deafness, tinnitus, and dizziness, causes unknown
    Meniere's disease
  17. inflammation of the tympanic membrane (eardrum)
    myringitis
  18. inflammation of the external ear
    otitis externa
  19. inflammation of the middle ear
    otitis media
  20. ankylosis of the stapes, resulting in conductive hearing loss
    otosclerosis
  21. progressive hearing loss in some elderly persons
    presbycusis
  22. also called nerve deafness, this type of hearing loss results from physical damage to the hair cells, the vestibulocochlear nerve, or the auditory cortex. this condition may occur because of aging. explosions, extremely loud noises, such as from machinery or loud music, and some anitbiotics can damage the hair cells in the organ of the Corti, creating partial to complete deafness. other causes include brain tumors, strokes, infections, traumas, vascular disorders, and degenerative disease.
    sensorineural deafness
  23. the surgical creation of a new opening in the labyrinth of the ear for restoration of hearing in otosclearosis
    fenestration
  24. excision of the mastoid cells of the mastoid process
    mastoidectomy
  25. incision of the tympanic membrane; tympanotomy with placement of tubes to maintain drainage
    myringotomy
  26. plastic surgery on the eardrum (pinna)
    otoplasty
  27. excision of the stapes
    stapedectomy
  28. plastic surgery on the eardrum
    tympanoplasty
  29. myringotomy; incision of the tympanic membrane
    tympanotomy
  30. opening of passage in the ear
    acoustic meatus
  31. auris dextra, right ear
    AD
  32. auris sinistra, left ear
    AS
  33. aures unitas (both ears) or auris uterque (each ear)
    AU
  34. a device for testing the hearing
    audiometer
  35. person who performs hearing tests
    audiometrist
  36. pertaining to the ear; sense of hearing
    auditory (or acoustic)
  37. a unit of measure of the intensity of sound
    hearing aid
  38. dogs trained to respond to sounds and alert the hearing-impaired person
    hearing-ear dogs
  39. an instrument used for inspecting the ear
    otoscope
  40. examination of the ear by means of the otoscope
    otoscopy
  41. communication by means of manual signs and gestures
    sign language
  42. a noise (ringing) in the ears
    tinnitus
  43. a small metal instrument consisting of a stem and two prongs used to test hearing
    tuning fork
  44. a sensation of rotation or dizziness
    vertigo

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