Cranial nerves

• CN I, FOE, function

  Olfactory

  Cribiform of ethmoid bone

  Sensory
• CN II, FOE, function

  Optic

  Optic canal

  Sensory
• CN III, FOE, function

  Oculomotor

  Superior orbital fissure

  Motor
• CN IV, FOE, function

  Trochlear

  Superior orbital fissure

  Motor
• CN V, V1, V2, V3

  Trigeminal

  Opthalmic - superior orbital fissure, sensory

  Maxillary - rotundom, sensory

  Mandibular - ovale, mix
• CN VI, FOE, function

  Abducens

  Superior orbital fissure

  Motor
• CN VII, FOE, function

  Facial

  Stylomastoid foramen

  Mix
• CN VIII, FOE, function

  Vestibulocochlear or acoustic or auditory

  Internal acoustic meatus

  Sensory
• CN IX, FOE, function

  Glossopharyngeal

  Jugular foramen

  Mix
• CN X, FOE, function

  Vagus

  Jugular foramen

  Mix
• CN XI, FOE, function

  Spinal accessory

  Enter: foramen magnum

  Exit: Jugular foramen

  Motor
• CN XII, FOE, function

  Hypoglossal

  Hypoglossal canal

  Motor
• 2 structures found in optic canal

  1. optic nerve
  2. opthalmic artery
• Longest intracranial nerve

  Trochlear
• Smallest cranial nerve

  Trochlear
• Largest cranial nerve

  Trigeminal
• Cutaneous innervation of tip of nose

  V1
• 4 nucleus in CNS of trigeminal nerve

  • Mesencephalic nuclei
  • Principal sensory
  • Spinal nucleus
  • Motor nucleus
• Branches of V1

  • Frontal nerve - largest
  • Lacrimal nerve - smallest
• Largest branch of trigeminal nerve

  V3
• General sensation inn. of anterior 2/3 of tongue

  Lingual nerve - V3
• Taste sensation inn. of anterior 2/3 of tongue

  Chorda tympani - CN 7
• General sensation inn. of posterior 1/3 of tongue

  CN 9
• General and taste sensation inn. of roof of tongue

  CN 10 - internal laryngeal nerve
• Sensory and motor innervation of parotid gland

  Sensory - V3

  Motor - CN 9
• 5 major branches of parotid gland

  1. Temporal
  2. Zygomatic
  3. Buccal
  4. Mandibular
  5. Cervical
• Receptor organ for hearing

  Organ of corti
• Sensory receptors for hearing

  Hair cells
• Sensory and motor innervation of gag reflex

  Sensory - 9

  Motor - 10
• What are the cranial nerves with parasympathetic innervation?

  CN 3,7,9,10
• Altered lacrimation is associated in damage of what cranial nerve?

  CN 7 or V2
• Vitamin K dependent clotting factors produced by the liver are?

  2,7,9,10
• Clotting factors

  1. Fibrinogen
  2. Prothrombin
  3. Thromboplastin
  4. Calcium
  5. Labile factor
  6. Not yet approved
  7. Stable factor
  8. Antihemophilic factor
  9. Christmas factor
  10. Stuart factor
  11. Plasma thromboplastin antedecent
  12. Hageman factor
  13. Fibrin stabilizing factor
• Most important clotting factor and deficient in hemophilia A

  VIII
• Tissue factor

  III
• Deficient in hemophilia B

  IX
• Deficient in hemophilia C

  XI
• What measures extrinsic pathway?

  Prothrombin time (9-13 secs)
• What measures intrinsic pathway?

  Partial thromboplastin time (25-35 secs)