Cranial nerves

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Author:
mepachec
ID:
38861
Filename:
Cranial nerves
Updated:
2010-09-30 22:46:06
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cranial nerves
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cranial nerves
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  1. Olfactory
    I - sense of smell
  2. Optic
    II - are sensory and leads from eyes to brain - vision
  3. Oculomotor
    III - primarily motor - motor fibers transmit impulses that raise the eyelids, move te eyes, adjust the amount of ight entering th eeyes, and focus the lenses.
  4. Trochlear
    IV - primarily motor - motor fibers transmit impulses to muscles that move the eyes.
  5. Trigeminal
    • V - mixed
    • Ophthalmic - sensory fivers transmit impulses from the surface of the eyes, tear glands,
    • scalp, forehead, and upper eyelids.
    • Maxillary - sensory, fibers transmit impulses from the upper teeth, upper gum, upper lip,
    • lining of the palate, and skin of the face.
    • mandibular - sensory fibers transmit impulses from the scalp, skin of the jaw, lower
    • teeth, lower gum, and lower lip. Impulses of mastication and to muscles in the
    • floor of the mouth.
  6. Abducens
    VI - abducens - primarily motor - transmit impulses to muscles that move the eyes.
  7. Facial
    VII - mixed - transmit impulses associated with taste receptors of the anterior tongue, facial expressions, tear glands, and salivary glands
  8. Vestibulocochlear
    VIII - sensory - equilibrium, sense of hearing
  9. Glossopharyngeal
    • IX - mixed - pharynx, tonsils, posterior tongue, and carotid arteries, salivary glands, and
    • muscles of the pharynx used in swallowing.
  10. Vagus
    • X - mixed
    • somatic motor fibers transmit impulses to muscles associated with speech
    • and swallowing; autonomic motor fibers trasmit impulses to the viscera of the
    • thorax and abdomen.
    • sensory fibers transmit impulses from the pharynx, larynx, esophagus, and viscera of the
    • thorax and abdomen.
  11. Accessory
    XI - primarily motor - palate, pharynx, and larynx, muscles of the neck and back
  12. Hypoglossal
    XII - primarily motor - move the tongue
  13. Name the cranial nerves in order.
    • Olfactory
    • Optic
    • Oculomotor
    • Trochlear
    • Trigeminal
    • Abducens
    • Facial
    • Vestibulocochlear
    • Glossopharyngeal
    • Vagus
    • Accessory
    • Hypoglossal

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