CN VIII Vestibulocochlear Flashcards
CN VIII Vestibulocochlear - Several Nuclei - 2 Cochlear nuclei located in?
The caudal pons
CN VIII Vestibulocochlear - Several Nuclei - 4 vestibular nuclei located in?
The caudal pons and rostral medulla
CN VIII Vestibulocochlear - Nerves exits?
Laterally at the base of the pons
Pontomedullary Junction
CN VIII Vestibulocochlear - Types of neurons are?
Special sensory
- Hearing - Cochlear
- Equillbrium - Vestibular
CN VIII Vestibulocochlear - Receptors located in the inner ear in the?
Labyrinth
- Vestibular apparatus
- Cochlea
CN VIII Vestibulocochlear - Cochlear Portion - Sound waves are amplified by the ear drum and transmitted through the middle ear - Depolarization of neurons in CN VIII Vestibulocochlear - Cochlear nuclei in?
Caudal pons at junction of pons and medulla - 2nd order neurons ascend bilaterally
CN VIII Vestibulocochlear - Deafness - Almost always?
Peripheral due to death of the receptor cells secondary to loud noise or a condition problem
CN VIII Vestibulocochlear - Deafness - Seldom neural due to?
Bilateral ascension and processing of info
CN VIII Vestibulocochlear - Deafness - Can occur centerally if the?
Cochlear nuclei itself is damaged
CN VIII Vestibulocochlear - Vestibular Portion - Vestibular apparatus - provides information regarding?
Head position in space and head movements
- Detects head rotation
- Detects linear motion and acceleration (vertical movement or when moving forward)
CN VIII Vestibulocochlear - Vestibular portion - Vestibular apparatus is important in?
Gaze stabilization
CN VIII Vestibulocochlear - Vestibular portion - information from vestibular apparatus goes to several places?
Vestibular nuclei (caudal pons and rostal medulla)
Cerebellum
Reticular formation
CN VIII Vestibulocochlear - Vestibular portion - Afferent part of the?
Vestibulo-Ocular Reflex
-Head quickly moves one way, eyes move in the opposite direction
