Auditory and Vestibular Pathways Flashcards
Fibers of the _______ nerve are the central processes of nerve cells located in the spiral ganglion
cochlear
Fibers of the cochlear nerve enter the ________ surface of the __________ border of the pons wherein the nerve fibers divide
anterior surface of the lower border of the pons
The anterior and posterior cochlear nuclei are situated on the surface of the __________ cerebellar peduncle
inferior
The cochlear nuclei send axons (second-order neuron fibers) that course medially through the pons and are relayed to the nucleus of the ___________ and the ________ olivary nucleus on the same or the opposite side
trapezoid body
superior olivary nucleus
The fibers of the lateral lemniscus synapse with neurons of which part of the midbrain?
inferior colliculus
Auditory fiber are eventually relayed in the ________ in the thalamus
medial geniculate body
The recognition and interpretation of sounds on the basis of past experience take place in the ________ area of the cortex
secondary auditory area (BA22)
The ___________ bundle has an inhibitory action on impulses originating in the cochlea
olivocochlear bundle
Each hair cell of the macula contains how many kinocilium?
1
The afferent fibers of the vestibular nerve have their cell bodies in which ganglion?
vestibular ganglion of Scarpa
Where is the Scarpa’s ganglion located?
internal acoustic meatus.
Eponym for superior vestibular nucleus
Bechterew nucleus
Major efferent connections of the vestibular nuclei are to the following:
→ Cerebellum
→ Spinal cord
→ Nuclei of the cranial nerves to the extraocular muscles
Cerebellar lobe important for balance, posture, and eye movements.
flocculonodular lobe
Vestibulospinal tract that is uncrossed
Lateral Vestibulospinal tract
Medial is either
