Term
| What do semicircular canals respond to? |
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Definition
| Head rotation (angular acceleration) |
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Term
| What do the Utricle and Saccule respond to? |
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Definition
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Term
| How do hair cells respond to stimulus? |
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Definition
They are composed of stereocilia and kinocilium which are lined up in graduated rows. movement of the gelatinous matierial relative to the hair cell causes a deflection |
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Term
| Deflection of the hair bundle toward the kinocilium elictis ______ |
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Definition
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Term
| Deflection of the hair bundle away from the kinocilium ______ the hair cell |
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Definition
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Term
| Why do you feel dizzy after you stop spinning around in a circle? |
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Definition
- Upon original rightward head rotation the fluid moves to the left, depolarizing the cell (fluid moves towards the kinocillium).
- The fluid catches up to the head and rotates at the same rate decreasing it's firing rate.
- When you stop spinning and the head becomes stable the fluid is still moving away from the kinocillium, hyperpolarizing the cell resulting in SSC stimulation post rotation.
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