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38 Cards in this Set
- Front
- Back
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Sences of Hearing
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sound at dif frequence
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Sense of Balabance
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bodys orientation and movement
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tilt of head
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utricle and saccule
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linear acceleration and deceleration
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utrcle and saccule
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head rotation
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semiciular canals
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hair cells
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recetor cells
mechnorectors |
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cochlea hair like processes
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tectorial membrane
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semicircular canals hair like processes
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cupula
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utrical and saccule hair processes
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otolithic membrane
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sounds vibrations
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chochlea
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vestibular nerve 8
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brain recieves info from ear
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External Ear
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auricle/pinna
external auditory canal |
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Middle Ear entrance
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tympanic membrane
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Middle ear bones
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malleus incus stapes
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Opening to inner ear
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oval window
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Minddle ear filled w/
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air
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Inner ear filled w/
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liquid
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Skeletal muscels attached to ossicles
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tensor tympani
stapedius |
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Tympanic reflexs/attenation reflex
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respoinse to loud sounds
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Eustachian tube
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connects air cavity of middle ear w/ pharynx
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Inner Ear
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Vestibular Appratus
Cochlea |
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Vestibular Apparatus
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semicircular canals: ampulla
utrical and saccule |
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Cochlea
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Vestibuli oval window
Reisnners vestibular memberane Media endolymph basilar membrane OrganofCorti Tympanie round window |
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Vibirations Sound Wave
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1 tympanic membrane eardrum
2 vibrations malleus incus stapes to oval window 3 vibraion of vestibuli 4 reissners membrane to media 5 basilar membrane>stimulaion of Organ of Corti 6 typani transmitts to roundwindow |
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Cochlear branch
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innervates cochlea
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Vestibular branch
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innervates semicircular canal, utricle, and saccule
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Balance controled by
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vestibular system of inner ear
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vestibular system functions
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1. maintenance of body balance
2. stable eye positioin |
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vestibular motor pathways
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vestibulospinal
tectospinal reticulospinal to trunk and poximal limb muscles |
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Utricle and Saccule detects
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head tilt and acceleration or deceleration
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macula
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sensory area contaning hair cells of utricle and sccule
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otolithic membrane
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contains statoconia/otoliths(ear stones)
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utricle and saccule detects movements
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falling
accelerating blanace while sitting or walking |
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semicircular canals
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detects head rotation
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semicircular canals sense organ
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crista ampullaris
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Cupula
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detecs movment of endolymph in semicirular canal
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Otolihic membrane
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detecs changes in gravity in utricle and saccule
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8 vestibulocochlear nerve
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verstibular and spiral ganglion
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