CN -12.txt

  1. vestibulocochlear nerve function
    sensory nerve for hearing (cochlear nucleus) and balance (vestibular nucleus)
  2. Lesions of CN VIII
    tinnitus, impairment or loss of hearing, vertigo (upset balance)
  3. Conductive deafness
    involves external or middle ear
  4. Sensorienural deafness
    from disease in cochlear or pathway from cochlea to the brain
  5. Glossopharyngeal nerve divisions
    visceral sensory and special sensory
  6. Glossopharyngeal functions
    afferent supply of tongue and pharynx, motor to stylopharyngeus, and parasympathetic to parotid
  7. lesion of glossopharyngeal nerve
    loss of sensation from the pharynx, loss of gag reflex, loss of taste from posterior 1/3rd of tongue
  8. lesions of vagus nerve
    weakness of the pharyngeal and laryngeal muscles, loss of cough reflex
  9. Injury to recurrent laryngeal nerve
    hoarseness and dysphonia (unilateral, aphonia and inspiratory stridor (bilateral), lft is more commonly injured
  10. Spinal accessory nerve is
    spinal and accessory cranial nerve roots joined
  11. Spinal accessory nerve supplies
    trapezius and SCM, neck and shoulder movement
  12. injury to spinal accessory nerve
    weakness and atrophy - difficult to turn chin up (SCM) and difficult to raise shoulder (Trapezius), scapular winging
  13. when is spinal accessory nerve at risk for injury?
    surgery for lymph node biopsy, cannulation of internal jugular vein, carotid enarterectomy
  14. Hypoglossal nerve supplies
    muscles of the tongue, movement of the tongue
  15. Damage to hypoglossal nerve
    weakness, fasciculations, deviation of the tongue (ipsilateral); central lesions cause deviation to opposite side
Card Set
CN -12.txt