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Cranial nerves
The 12 nerves that enter and leave the brain
directly rather than through the spinal cord. They are numbered and individually
named:
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I Olfactory: smell
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II Optic: vision
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III Ocumotor: eye muscles
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IV Trocular: oblique muscles of eye
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V Trigeminal: face, nose, and tongue
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VI Abducens: rectus muscles of eye
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VII Facial: facial muscles, taste buds, anterior
part of the tongue
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VIII Auditory-vestibular: hearing and balance,
also called vestibulocochlear
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IX Glossopharyngeal: the throat, taste buds,
posterior part of the tongue
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X Vagus: heart, lungs, thorax, larynx, pharynx,
external ear, and abdominal viscera
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XI Spinal accessory: neck muscles
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XII Hypoglossal: tongue muscles
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