anatomy test: the ear
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21 terms
Terms | Definitions |
|---|---|
 outer middle inner | what are the 3 major areas of the ear |
| outer ear | composed of the pinna and external auditory canal |
| pinna | shell shaped structure "ear" |
| external auditory canal | is carved into the temporal bone |
| one inch | how long is the external auditory canal |
| ceruminous glands | secrete earwax |
| tympanic membrane | sounds hit the membrane causing it to vibrate (eardrum) |
| middle ear | found within the temporal bone |
| middle ear | auditory tube links the middle ear with the throat |
| unequal | if pressures are ___, hearing becomes difficult |
| yawning swallowing | ___ and ___ can open briefly to equalize pressure |
| otitis media | inflammation of the ear |
| otitis media | treated with emergency myringotomy |
| tympanic cavity | is spanned with the bodies three smallest bones |
| hammer anvil stirrup | what are the three smallest bones (ossicles) |
| hammer | transfers vibrations to the anvil |
| anvil | passes vibration onto the stirrup |
| stirrup | excies the hearing receptors |
| inner ear | commonly called the osseous (bony labrynth) |
| osseous | located within the temporal bone and behind the eye socket |
| cochlea vestibule semicircular canals | what are the three subdivisions of the inner ear |
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