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Cranial Nerves
 
 

CN VIII: Vestibulocochlear

February 15th, 2021
 
 
 
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Overview

  • Roles

  • Special sensory - equilibrium (vestibular nerve) and hearing (cochlear nerve)

Vestibulocochlear Nerve Palsy

  • Abnormalities

  • Sensorineural hearing loss
  • Vertigo
  • Nystagmus
  • Causes of Vestibulocochlear Nerve Palsy

  • Tumour - cerebellopontine angle, internal auditory canal
  • Meningitis
  • Guillain-Barre
  • Sarcoidosis
  • Congenital absence

Special Sensory Pathway

Cortical Centre
Primary auditory cortex (temporal lobe)
 
 
Nucleus
Pons, medulla
 
Cerebellopontine Angle
Foramen
Internal auditory meatus
Division
 
 
 
 
Cochlear Nerve
 
Spiral Ganglion
 
 
Receptors
Organ of Corti
 
 
Vestibular Nerve
 
Vestibular Ganglion
 
 
Receptors
Vestibulae
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