~BN18 vestibular system

~BN18 vestibular system - The Vestibular System Lesson 18...

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The Vestibular System Lesson 18
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Orientation: The Vestibular System critical for adaptive interaction largely unnoticed except unusual conditions motion sickness: nausea, dizziness coordinating body position with other sensory information ~
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Receptors for Orientation Inner ear Gravity detectors plane of reference Mechanoreceptors Vestibular Organs otocysts saccule utricle semicircular canals ~
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Otocysts Liquid-filled “ear sacs” lined with hair cells contain otoliths “ear stones : direction of acceleration saccule: vertical movement utricle: horizontal movement ~
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At rest tilted Acceleration to right Direction of gravity
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Semicircular Canals Rotary acceleration any direction 3 fluid-filled canals right angles to each other 1 for each major plane Movement causes fluid to circulate displaces cupula ~
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Semicircular canals Utricle Ampulla Crista hair cells Cupula
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This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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~BN18 vestibular system - The Vestibular System Lesson 18...

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