Ear

Your ear has three main parts: outer, middle and inner. You use all of them in hearing. Sound waves come in through your outer ear. They reach your middle ear, where they make your eardrum vibrate. The vibrations are transmitted through three tiny bones, called ossicles, in your middle ear. The vibrations travel to your inner ear, a snail-shaped organ. The inner ear makes the nerve impulses that are sent to the brain. Your brain recognizes them as sounds. The inner ear also controls balance.

  Diseases of the ear and mastoid process 

Outer ear

• Otitis externa
• Otomycosis

Middle ear
and mastoid

• Otitis media
• Mastoiditis 
  • Bezold's abscess
  • Gradenigo's syndrome
• Tympanosclerosis

• Cholesteatoma
• Perforated eardrum

Inner ear and
central pathways

Equilibrioception	Vertigo/Balance disorder: peripheral  Ménière's disease BPPV Vestibular neuronitis (Labyrinthitis) Perilymph fistula central (Central positional nystagmus)
Hearing	Hearing impairment Conductive hearing loss  Otosclerosis Superior canal dehiscence Sensorineural hearing loss  Presbycusis Cortical deafness Nonsyndromic deafness Excessive response Tinnitus Hyperacusis/Phonophobia Deafblindness Wolfram syndrome Usher syndrome Other Auditory processing disorder Spatial hearing loss

External links

• Wikipedia's article on Ear

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