Term
| Where is Perilymph found and what is it? |
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Definition
| The perilymph is a fluid, similar to spinal fluid, found in the scala vestibuli and scala tempani. |
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Term
| What is Endolymph and where is it found? |
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Definition
| Endolymph is a fluid found inside the cochlear duct and the semicircular canals. |
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Term
| Give the steps of a sound wave - Outer ear to the Oval window. |
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Definition
| 1. It enters the Pinna, travels down the External Acoustic canal and "vibrates" the tympanum. From there the ossicles are moved and ultimatly the stapes "vibrates" membrane of the oval window. |
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Term
| Give the steps of a sound wave - Oval window to the action potential. |
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Definition
| A wave is created in the scalas of the cochlea and this was "pushes" on the techtorial membrane of the cochlear duct. This "moves" the cell hairs that implanted in the basular membrane - thus AP. |
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Term
| What happens when the hair cells are bent? |
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Definition
| It changes their voltage to an electrical wave. The number of AP depends on how much they are bent. |
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Term
| What is the middle ear filled with? |
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Definition
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Term
| How is pressure equalized in the middle ear? |
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Definition
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Term
| How do we lose hearing in the outer and middle ear? |
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Definition
| Earway and blockage which blocks the pressure waves from getting to the cochlea. |
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Term
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Definition
| Anything that interferes with the pressue waves arriving at the oval window. Everything from the outer ear to the stapes. |
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Term
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Definition
| High frequency haircell damage. |
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Term
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Definition
| Ringing in the ears. Hair cells are irritated. |
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