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Published byJewel Fields Modified over 8 years ago
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Cranial Nerves
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IIIrd Nerve 3 Oculomotor
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Oculomotor nucleus (motoneurons for eye muscles) Oculomotor nerve (to eye muscles & pupil muscles) Edinger Westphal nucleus (constricts the pupil)
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(from oculomotor) (from Edinger-Westphal)
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IVth Nerve 4 Trochlear
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IV Nerve 4 Trochlear
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Trochlear nerve (to eye muscles) Trochlear nucleus (motoneurons for eye muscles)
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(from trochlear)
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Vth Nerve 5 Trigeminal
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Main sensory trigeminal nucleus Trigeminal nerve Spinal trigeminal nucleus Motor trigeminal nucleus Spinal trigeminal nucleus (pain & temperature from head) Motor trigeminal nucleus (motoneurons for jaw muscles) Main sensory trigeminal nucleus (touch, conscious spindle & joint from head) Trigeminal nerve (afferent: touch, muscle spindle/joint, pain & temperature from head efferent: chewing muscles)
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Main sensory trigeminal nucleus (left) Motor Trigeminal Nucleus (right) Mesencephalic trigeminal tract (left) Mesencephalic trigeminal nucleus (left) Spinal trigeminal nerve (left) (1° axons on way to terminate in spinal trigeminal nucleus) Main sensory trigeminal nucleus (right) Spinal Trigeminal Nucleus (right) Trigeminal Nerve (left) Trigeminal Nerve (right) Spinal trigeminal nucleus (left)
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(from motor trigeminal nuc) (to main sensory & spinal trigeminal nucs) ALSO, UNCON PROP FROM JAW MUSCLES (to mesencephalic trigeminal nuc)
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maxillary mandibular Trigeminal ganglion ophthalmic
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Vth nerve – somatosensory component (from face skin)
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VIth Nerve 6 Abducens
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IV Nerve 4 Trochlear
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24 Abducens nucleus Abducens nerve
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(from abducens)
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VIIth Nerve 7 Facial
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Facial nucleus Facial nerve Genu of the Facial nerve Abducens nucleus
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30 Solitary tract (inside) Solitary nucleus (outside) Spinal trigeminal nucleus Abducens nucleus Superior salivatory nucleus Facial intermediate nerve part of facial nerve carrying: Motor 1) motor output from the superior salivatory nucleus to some salivary glands (GVE) Sensory 1) taste information from the anterior 2/3 of the tongue to solitary nucleus via the solitary tract (SVA) 2) touch information from a small patch of skin on the ear and behind the ear to spinal trigeminal nucleus (GSA) Facial intermediate nerve
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(from sup salivatory nuc) (from facial nuc) (to spinal trigeminal nuc) (to rostral solitary n) MOTOR SENSORY
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VIIIth Nerve 8 Vestibular-Cochlear
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(from inner ear to vestib & cochlear nucs)
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IXth Nerve Glossopharyngeal
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(from ambiguus nuc) (from inf salivatory nuc) MOTOR SENSORY (to caudal solitary nuc) (to spinal trigeminal nuc) (to rostral solitary nuc)
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Xth Nerve Vagus
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(from ambiguus nuc) MOTOR SENSORY (from dorsal motor nucleus of Vagus) (to caudal solitary nuc) (to spinal trigeminal nuc)
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(from ambiguus nuc) MOTOR SENSORY (from dorsal motor nucleus of Vagus) (to caudal solitary nuc) (to spinal trigeminal nuc)
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(from ambiguus nuc) MOTOR SENSORY (from dorsal motor nucleus of Vagus) (to caudal solitary nuc) (to spinal trigeminal nuc)
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XIth Nerve Spinal Accessory
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(from spinal accessory nucleus in cervical cord)
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XIIth Nerve Hypoglossal
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(from hypoglossal nuc)
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Cranial Nerve Summary
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The End
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