Term
innervation characteristics for type I and type 2 hair cells:
-Type 1: One ___ nerve ending can synapse with one, or two to four hair cells
-Type 2: Multiple efferent and afferent ___ nerve synapses |
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Definition
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Term
Ewald's Law:
-EL 1: Stimulation of a semicircular canal (SCC) causes eye ___ with respect to head in the plane of the canal stimulated
-EL 2: In the horizontal canals, movement of endolymph _____ utricle causes greater neural activity than does movement of the endolymph _______ utricle |
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Definition
| rotation; toward; away from |
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Term
Ewald's Law:
-EL 3: In vertical canals, movement of endolymph _______ utricle causes greater neural activity than ________ movement of the endolymph |
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Definition
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Term
| The primary purpose of this reflex is to elicit rapid compensatory eye movements that maintain stability of image on fovea during head movement. Moves eyes in direction opposite to head rotation. |
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Definition
| Vestibulo-Ocular Reflex (VOR) |
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Term
| The purpose of this reflex is to maintain posture and maintain a center of mass over base of support. There is an upper and lower limb response: Ipsilateral (to direction of acceleration) muscles are extended and contralateral muscles are contracted |
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Definition
| Vestibulospinal Reflex (VSR) |
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Term
| This reflex assists in maintaining the head in a horizontal gaze orientation relative to gravity. Mediated through the utricle and saccule. |
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Definition
| Vestibulocolic Reflex (VCR) |
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Term
| What are five central areas which receive afferent information from vestibular nuclei? |
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Definition
| Extraocular motor nucle, Spinal cord, Flocculus of the cerebellum, reticular formation, and the thalamus |
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Term
| Indicate the location of the vestibular cortex |
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Definition
| the area between the parietal and insular lobes |
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Term
Connections with vestibular cortex, thalamus, and
reticular formation allow:
-Integrations of arousal and conscious awareness of the
body to discriminate between movement of ___ and ___
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Definition
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Term
Cerebellar connections help maintain:
-___ of VOR
-Contribute to ___ during static and dynamic activities
-Influence ___ of limb movements
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Definition
| Calibration; posture; coordination |
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