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14 Cards in this Set
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- Back
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Sense angular acceleration
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3 semi-circular canals
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Includes the saccule and utricle, which sense linear acceleration.
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Maculae
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Hair cells serve as the ----- used to provide information on head motion and head orientation with respect to gravity.
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cellular sensory element
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Function of the otolithic organs (utricle and saccule)
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static tilt with respect to gravity and linear accleration
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Hair cells project into ------ Otoconia reside on surface of --------
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gelatinous layer
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Vertically oriented in the sagittal plane. Hair cells oriented with knocillium (sensitivity) away from striola
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Saccule
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Horizontal with a 30 degree off-horizontal bend toward the anterior end. Hair cells oriented with kinocillium (sensitivity) facing striola
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Utricle
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Function of semicircular canals
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angular acceleration and principle input to the VOR
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Crista of the semicircular canals is located in the
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Ampulla
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In the semicircular canals, the hair cells are oriented in the same direction as defined by
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kinocillium
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hair cells in the scc project into the ---- a gelatinous surface structure
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cupula which attaches to the opposite wall
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endolymph flow toward the ampulla is
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excitatory (ampullopedal)
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Endolymph flow away from the ampulla is
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inhibitory (ampullofugual)
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Endolymph flow is opposite to
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direction of angular acceleration (head motion)
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