Exam 2 CN VIII Vestibulocochlear Flashcards
The cochlear nerve arises from which ganglion?
Spiral ganglion of Corti
The hair cells of the organ of Corti are for hearing/balancing sense
Hearing
The foraminous spiral tract becomes what root?
Radix cochlears
The cochlear neve terminates in what nuclei?
Anterior and Posterior cochlear nuclei
The nerve fibers from the basal cochlear convolution terminate where for tonotopic organization?
Medial part of the posterior cochlear nucleus
The trapezoid body contains what three nuclei?
Anterior, medial, and posterior nuclei
Name the connection between the dorsal cochlear nucleus to the opposite side of the lateral lemniscus.
Posterior acoustic (medullary) striae
The Probst’s commissure connects what?
Right and left lateral lemniscus
The peduncle of the inferior colliculi connects what two structures for sound information?
Inferior colliculus to Medial geniculate body
The right and left medial geniculate bodies are inter-connected by what?
Gudden’s commissure or Inferior supraoptic commissure
Name five commissures connecting the cochlear tract in the central nervous system.
Trapezoid body Posterior Acoustic Striae Probst's commissure Inferior Colliculi Gudden's Commissure
The auditory cortex is located in this gyrus
Superior temporal gyrus
The vestibular nerve originated from where?
Vestibular ganglion in the internal acoustic meatus
The superior part of the vestibular ganglion receives nerves from where?
Anterior, lateral ampullary nerves
Utricular nerve
Saccular nerve
Name the first nucleus where the vestibular nerve enters centrally.
Deiter’s (Lateral Vestibular nucleus)
