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14 Cards in this Set
- Front
- Back
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pinna
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-visible portion of the ear
-consists primarily of cartilage covered by skin, forming a funnel -helps collect sounds from a wide area |
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other pinna facts
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-shape makes it easier to hear sounds from forward than behind
-convolutions play a role in localizing sounds, |
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auditory canal
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entrance to the internal ear
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tympanic membrane
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eardrum
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ossicles
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series of bones connected to medial surface of tympanic membrane, located in air-filled chamber, transfer movements of eardrum to oval window
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oval window
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membrane covering a hole in the bone
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cochlea
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behind oval window, fluid-filled, contains apparatus for transforming physical motion into a neuronal response
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sound wave...
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moves the tympanic membrane
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tympanic membrane...
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moves the ossicles
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ossicles...
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move membrane at oval window
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motion at the oval window...
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moves fluid in the cochlea
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movement of fluid in cochlea...
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causes a response in sensory neurons
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primary auditory cortex
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located in temporal lobe, A1
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MGN
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medial geniculate nucleus, located in thalamus, relay from inner ear to A1
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