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Cranial Nerves

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  • 1-Olfactory- 

    sense of smell.

  • 2-Optic-

    transmits vision stimulus.

  • 3-Oculomotor- 

    controls how your eyes move and how your pupils react to light.

  • 4-Trochlear-

     “pulley shaped ligament” 

    - Moves eyes laterally and downwards. 

    - Supplies the superior oblique with nerves.

  • 5-Trigeminal-

    motor fibers elevate the mandible while chewing. 

    -sensory fibers to scalp and face 

    - largest cranial nerve

    - 3 branches

  • 6-Abducens-

      the gaze while turning your eyes laterally.

    -motor control of the lateral rectus 

  • 7- Facial-

    responsible for facial expression, taste, tear and saliva production.

  • 8 - Vestibulocochlear -

    responsible for hearing and balance.

  • 9 - glossopharyngeal-

    Responsible for swallowing 

    -Controls tongue and pharynx.

  • 10- vagus- 

    -detects CO2 concentration

    -heart rate, digestion, breathing,

     immune responses

  • 11- Accessory-

    -Allows you to shrug with shoulders

    -Muscles for speech

    - part of the vagus nerve

  • 12- hypoglossal- 

    -Muscles of tongue.

    - means under the tounge