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11 Cards in this Set
- Front
- Back
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contains receptors for hearing and equilibrium
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ears
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3 main parts of ear
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1. external
2. middle ear 3. inner ear |
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external ear
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auricle or pinna
external auditory canal - contains ceruminal gland - serves as exit passageway for sound tympanic membrane - separates external and middle ear |
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middle ear/ tympanic cavity
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air filled cavity
consists of ossicles (transmits vibratory motor of the eardrum to fluids of inner ear) |
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kinds of ossicles
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1. hammer/ malleus
2. anvil/ incus 3. stirrup/ stapes |
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internal / inner ear
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functions in both equilibrium and hearing
consists of bony chambers called OSSEUS/ Bony Labyrinth |
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3 subdivisions of osseus
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1. cochlea - hearing receptors
2. vestibule - equilibrium receptors 3. semicircular canals - equilibrium |
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plastic surgery of the eardrum
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tympanoplasty
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hearing loss
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conductiva
sensorineural mixed |
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interrupted transmission of sound waves from external to the middle ear
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conductiva
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damage to inner ear
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sensorineural
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