Anatomy of the Vestibular Sensory Organs Flashcards
What part of the temporal bone contains the inner ear?
petrous
Where is the endolymphatic sac located?
ostium vestibular aqueduct (in posterior cranial fossa)
what vestibular epithelia have otoconia? What are ocotonia?
small crystals of ca carbonate in saccule & utricle
what ganglion contains the cell bodies of neurons innervating the vestibular sensory epithelia? what epodnym refers to this ganglia?
vestibular nerve ganglion (superior vestibular ganglion & inferior vestibular ganglion)
scarpa’s ganglion
what branch of basilar artery gives origin to the labyrinthine artery?
AICA
what is the subcellular location of the mechanotransduction channel and its associated tip link?
w/in stereocilia of hair cells in endolymph
what ionic channel maintains the vestibular hair cell resting membrane potential?
K+ channel
what axonal tract connects the superior & medial vestibular nuclei to CNIII, IV, & VI nuclei?
medial longitudinal fasciulus
what cortical area integrates visual vestibular & somatosensory input to perceive self motion?
primary vestibulosensory cortex
