Ch 16 Cranial Nerves

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Ch 16 Cranial Nerves
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2013-07-10 11:55:26
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ayaz learns anatomy
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  1. Cranial motor cell bodies location
    nuclei are in the brain
  2. Cranial nerves sensory cell bodies located
    in cranial sensory ganglia and in special sense organs
  3. CNI
    Olfactory, smell
  4. CN II
    Optic, vision, through optic canal, to occipital lobe
  5. CN III
    • Oculomotor, 4 eye muscles, levator palpebrae superioris
    • to IRIS for pupil constriction
    • Through: Superior orbital fissure
  6. CN IV
    • Trochlear, superior oblique
    • Through: Superior orbital fissure
  7. CN V
    • Trigeminal nerve,
    • V1 (opthalmic)
    • V2 (maxillary)
    • V3 (mandibular)
  8. CN V V1
    • Opthalmic 
    • Through: upraorbital foramen; superior orbital fissure
  9. CN V V2
    • Maxillary
    • Through: infraorbital foramen; foramen rotundum
  10. CN V V3
    • Mandibular
    • Through: Metal foramen; foramen ovale
  11. CN VII
    • Facial nerve
    • Through: Internal acoustic meatus; stylomastoid foramen
  12. Motor functions of CN VII
    Facial muscles, lacrimal glands, salivary glands
  13. Sensory functions of VII
    taste (anterior 2/3 of tongue, chorda tympani nerve)
  14. CN VIII
    • Vestibulocochlear
    • 2 nerves: Cochlear Nerve, Vestibular Nerve
    • Foramen: Internal acoustic meatus
  15. CN IX
    • Glossopharyngeal
    • taste, swallow, saliva, BP
    • Through: Jugular foramen
  16. CN IX Sensory functions
    taste, bp
  17. CN IX motor functions
    swallow, saliva
  18. CN X
    • Vagus nerve
    • Parasympathetic to most organs
    • pharyngeal muscles (swallowing)
    • laryngeal muscles (Vocal sounds)
    • Through: Jugular foramen
  19. CN XI
    • Accessory
    • Motor to: Trapezius muscle, sternocleidomastoid
    • Through: jugular foramen
  20. CN XII
    • Hypoglossal
    • motor to muscles of tongue
    • Through: hypoglossal canal

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