Flashcards in Exam IV-Vestibular Deck (17):
Where do the semicircular canals terminate?
the utricle (after the ampulla of coarse)
Is the horizontal canal usually next to the anterior or posterior canal?
Where are the vestibular hair cells?
What is the gelatinous mass surrounding the vestibular hair cells?
Is the cell depolarized or hyperpolerized when the stereocillia move TOWARD the kinocillia?
TO the Kinocillia = DEpolarization
What are the utricle and saccule?
Fxn of utricle?
Forward and backward acceleration
Fxn of saccule?
Which plane is the macula of the utricle in?
Which plane is the macula of the saccule in?
What is the main tract for the SVN pathway? Where does it go?
What is the main tract for the LVN? Where does it go?
CORTEX...vestibulospinal tract...to the cotex for perception of balance
What is the main tract for the MVN? Where does it go?
EYE...coordinates eye movement. uses MLF & vestibulospinal tracts
What is the tract, function, and destination of IVN?
CEREBELLUM & RETICULAR formation...postural control uses contra vestibular nuclei
What causes BPPV?
CupoloLithasis and Canalithasis
Which disease is an over production or lack of absorption of endolymph?
Meniere' Disease both auditory and vestibular!!