S&H A&P PowerPoint 7
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Sensorineural Hearing Loss can be due to (name 5) | show 🗑
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| Retrocochlear Hearing Loss | show 🗑
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| Sensorineural Hearing Loss | show 🗑
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| Presbycusis | show 🗑
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| Endolymphatic Hydrops | show 🗑
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| show | if exposed to loud sound for a short time (e.g. concert)
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| show | if exposed to loud sound for a long time, leads to irreversible hearing loss
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| What are the parameters for noise-induced hearing loss? | show 🗑
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| The first thing effected when exposed to loud sounds | show 🗑
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| show | Outer Hair Cells--when these die, they are replaced by supporting cells (no amplification and vibrations are smaller)
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| show | loudness and sharp tuning of the organ of Corti. 40 dB decrease in sensitivity--brain can't tell where the maximum displacement is and hears sounds at different frequencies
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| The third thing effected when exposed to loud sounds | show 🗑
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| show | the auditory nerve can no longer function (no action potential fired)
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| How does a cochlear implant work? | show 🗑
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| show | May hear sound at higher frequencies when there is IHC loss at certain points along the basilar membrane.
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