Cranial Nerve Work Sheet

Answer the following questions using your memory, the syllabus, your textbook and whatever other reference you want.

  1. Why are CN’s numbered the way they are numbered?
  2. What can you glean from each CN simply by its name?
  3. Olfactor n.
  4. Optic n.
  5. Oculomotor n.
  6. Trochlear n.
  7. Trigeminal n.
  8. Abducens n.
  9. Facial n.
  10. Vestibulocochlear n.
  11. Glossopharyngeal n.
  12. Vagus n.
  13. Spinal accessory n.
  14. Hypoglossal n.
  15. What CN’s contain the following?
  16. Only sensory neurons
  17. Only motor neurons
  18. Mixed neurons
  19. Somatic motor neurons
  20. Branchial motor neurons
  21. Visceral (parasympathetic) neurons
  22. General sensory neurons
  23. Special sensory neurons
  24. Visceral sensory neurons
  25. Identify the CN’s and/or vessels that traverse the following:
  26. Cribriform foramina
  27. Optic canal
  28. Superior orbital fissure
  29. Internal acoustic meatus
  30. Through the lateral wall of the cavernous sinus
  31. Jugular foramen
  32. Hypoglossal canal
  33. Foramen rotundum
  34. Foramen ovale
  35. Foramen magnum
  36. Greater petrosal hiatus
  37. Lesser petrosal hiatus
  38. Foramen spinosum
  39. Identify the CN that would most likely result in the following:
  40. Loss of hearing
  41. Abnormal/alteration of taste on the posterior tongue
  42. Loss of smell
  43. Miosis
  44. Loss of sensation over the forehead
  45. Downward and lateral gaze deviation
  46. Weakness in chewing
  47. Loss of balance
  48. Inability to look down and in
  49. Ptosis
  50. Blindness
  51. Loss of sensation over the skin of the nose
  52. Vocal cord paralysis
  53. Loss of salivation
  54. When saying “Ahhhh” during a physical exam a patients uvula deviates to the left
  55. Facial palsy
  56. Shoulder shrugging weakness
  57. During a physical exam a patient is instructed to protrude her tongue and when she does her tongue always deviates to the left
  58. Abnormal/alteration of taste on the anterior tongue
  59. Dilated pupils
  60. Identify the region of the brain where the nuclei of CN’s III-XII are associated (CN I and II are extensions of the brain rather than true peripheral nerves and are therefore not associated with nuclei in the brainstem):
  61. Midbrain
  62. Pons
  63. Medulla oblongata
  64. Identify what cell bodies are housed in each of the following ganglia:
  65. Ciliary
  66. Geniculate
  67. Glossopharyngeal
  68. Otic
  69. Pterygopalatine
  70. Submandibular
  71. Superior cervical
  72. Vagus
  73. What is the only CN to be affected by multiple sclerosis (MS)? Why?
  74. Identify the CN that innervates each of the following:
  75. Submandibular salivary gland
  76. Parotid gland
  77. Lacrimal gland
  78. Palatal glands
  79. Tongue movement
  80. All six eye muscles
  81. Elevation of the upper eyelid
  82. A woman involved in a motor vehicle accident cannot turn her head to the left and has right shoulder droop. Which nerve is damaged?
  83. Patient cannot blink his eye or seal his lips on the right side. Which nerve is damaged?
  84. What are the 3 classic signs of Horner’s syndrome? (Hint: PAM is Horny) Explain what could cause a patient to present with each of these findings.
  85. Describe each of the following reflexes and identify the CN’s/nerves responsible for sensory and motor limbs of each reflex:
  86. Corneal reflex
  87. Cough reflex
  88. Gag reflex
  89. Pupillary reflex
  90. Accommodation reflex of the lens