the ear terminology chapter 13. function to hear to provide the sense of balance
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The Ear
Terminology chapter 13
Function
• To hear
• To provide the sense of balance
Structure of the Ear• External ear– Auricle (pinna) to
the eardrum– Directs sound
waves into the ear
Structure of the Ear• Middle ear– Eardrum (tympanic
membrane)– Eustachian tube
connects middle ear to pharynx• Equalizes air pressure
on both sides of eardrum
– Ossicles• Carry sound vibrations• 3 small bones
Structure of the Ear• Inner ear– Bony space in skull– Cochlea • Contains organ of
hearing– Semicircular canals
and vestibule• Sense of balance is
maintained here• Equilibrium
Word Parts• Combining forms
– acou/o, audi/o………… hearing– aur/i, aur/o, ot/o……….ear– labyrinth/o…………….. inner ear
–myring/o………………..eardrum, tympanic membrane
Medical Terms
• Otomycosis– fungus in the ear– usually affects the
outer ear canal
Medical Terms• Tympanitis – inflammation of the
middle ear– commonly called
otitis media (OM)– Bulging, perforated,
or reddened tympanic membrane are signs
– Common in children
Disease and Disorder Terms
• Meniere’s disease – Chronic disorder– affects the inner
ear– Dizziness, ringing
in the ears, and hearing loss are the symptoms
Normal
Abnormal
Disease and Disorder Terms
• Tinnitus – Ringing in the ears– Can be caused by
Aspirin
Disease and Disorder Terms
• Vertigo – sense that one’s
own body or the environment is revolving
–may indicate inner ear disease
Surgical Terms• Myringotomy – Incision into the
eardrum to release pus or fluid and relieve pressure in the middle ear
Diagnostic Terms
• Otoscope – instrument used for
visual examination of the ear
Complementary Terms
• Audiologist – one who studies
and specializes in hearing
• Audiology – study of hearing
Common Abbreviations
• EENT……..eyes, ears, nose, and throat• OM………..otitis media• AD…………right ear • AS…………left ear• AU…………both ears
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