vestibular system Flashcards
vestibular system does what
equilibrium
balance
sensory organ of vestibular are where
bony labyrinth
bony labyrinth found where
inner ear
temporal bone
whats inside bony labyrinth
ducts and sacs
membranous labyrinth
whats in membranous labyrinth
audition
vestibular sense
parts of membranous labyrinth
semicircular dcuts
otolith organs
cochlea
semicircular, otolotih and cochlea which does audition
cochlea
membranous labyrinth filled with
endolymph
membranous labyrinth surrounded by
perliympth
perilymph highlights what on diagram and end does what
cochlea
semicircles
membranous labyrinth contains what
sensory organs
perilymph
between bone and membranous labyrinth
high na low k
endolymph
high k low n
why high K in endolymph
hair cells
hair cells
mechanical energy
steroecilia and kinocilium
whats taller stereo or kinocilium
kino
what links stereo and kino
k channels
depolarizing current in hair cells triggered by
K
key factor
sensory transaction at rest
parrell
baseline k /ca influx
baseline glutamate release
sensory transduction during depolarization
stereo to kino k open k influx depolraiton ca open c influx excitatory signal
hyper polarization transaction what happens
kino to stereo
k close
little k/ca influx
little glutaemate
the five vestibular organs send electrical impulses to what
branches of CN VIII
vestibulocochlear nerve
branches of CN BIII
vestibular and auditory
vestibulo parts do what
balance
cochlear parts do what
audition
semicircular ducts detect what
head rotation/ acceleration
3 semicircular ducts
anterior horizontal posterior
ampulla
end of semicircular canals
contain vestibular organs
cupula
gelatinous mass
has hair cells
mechanical displacement of hair cells does what
trigger AP
head rates where bony canal and endolymph going
bony canal with
endolymph opposite
left anterior canal works with
right posterior canal
left posterior canal works with
right anterior canal
left horizontal canal works with
right horizontal canal
left head turn does what
left horizontal duct
right horizontal duct
left head turns what happened on right n left
left excited, stereo to kino
right inhibited
kin to stereo
nodding yes is which ducts
sagittal
anterior and posterior duct
nodding no is which duct
axial
horizontal
maybe
cornonla is which duct
anterior posterior
otolith organs
utricle saccule
utricle and saccule contact what
endolymph
utricle and saccule do what
linear head accerlation
static head tilts
utricle or saccule bigger
utricle
horizontal linear movement
forward and backward acceleration n
utricle contains what
macula of utricle
membrane of utricle
utricle does what movement
horizontal
saccule does what movement
vertical
parts of saccule
macula of saccule
membrane of saccule
membrane doe what macular do what
membranes orientation
maccula sensory
striola
hair cells with opposition orientation line up
stroll embedded where
gelatinous otolithic membrane
linear head movement do what
activate hair cells
displace otoliths
otoliths
calcium carbonate crystals
5 vestibular organs
semicircular ducts (ant, post, horizontal) otolith organs (utricle, saccule)
