Term
| What is the range of frequencies that humans can hear? |
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Definition
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Term
| Scala media (endolymph) is rich in what ion? |
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Definition
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Term
| Path of soundwaves through cochlea? |
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Definition
| Enter via oval window --> travel through scala vestibuli to apex --> pass through helicotrema --> travel through scala tympani --> terminate @ round window |
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Term
| What membrane separates scala vestibuli from scala media? |
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Definition
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Term
| Ganglion that transmits sound info to cortex? |
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Definition
| Spiral ganglion- bipolar neurons |
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Term
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Definition
| Tallest stereocilium cell- lost during development |
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Term
| Transduction from mechanical waves to APs? |
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Definition
| Pushing stereocilia one way opens K+ channels --> K+ activates Ca++ channels --> Ca++ results in release of NT |
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Term
| Stereocilia embedded in what membrane? |
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Definition
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Term
| What sensory modalities are transmitted through the Medial and Lateral geniculate pathways? |
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Definition
Medial- think "music"- sound
Lateral- think "light"- vision |
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Term
| What structure produces endolymph for the semicircular canals and scala media? |
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Definition
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Term
| What does the saccule detect? |
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Definition
| Linear vertical acceleration |
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Term
| What does the utricle detect? |
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Definition
| Linear horizontal acceleration |
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Term
| What do the semicircular canals detect? |
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Definition
| Angular/rotational acceleration |
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Term
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Definition
| Fissure separating sections of hair cells in utricle/saccule w/ stereocilia facing opposite directions |
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Term
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Definition
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Term
| Ganglion that innervates the vestibular system? |
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Definition
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Term
| How many cells in Scarpa's ganglion? |
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Definition
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Term
| What are all the cochlear membranes? |
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Definition
| Basilar, tectorial, Reissner's, reticular |
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Term
| Where are Betz cells located? |
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Definition
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Term
| Most prominent two layers of motor cortex? |
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Definition
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Term
| Most prominent two layers of visual cortex? |
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Definition
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Term
| What layers house pyramidal cells? |
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Definition
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Term
| What layers house granular cells? |
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Definition
| II and IV (receive sensory info) |
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Term
| Location of Broca's area? |
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Definition
Inferior frontal gyrus
Brodmann's area 44, 45 |
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Term
| Location of Wernicke's area? |
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Definition
Superior temporal gyrus
Brodmann's area 22 |
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Term
| What type of amnesia is associated w/ Korsakoff's syndrome? |
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Definition
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Term
| Concentration of K+ in endo vs. perilymph? |
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Definition
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