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10 Cards in this Set
- Front
- Back
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3 divisions of Trigeminal Nerve - CN V
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V1 - Ophthalmic nerve
V2 - Maxillary Nerve V3 - Mandibular Nerve |
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Orofacial Fine Touch and Vibration pathway
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Trigeminal ganglion - chief sensory nucleus - ipsilateral side rises through dorsal trigeminal tract - contralateral through medial lemniscus - both sides end in Ventral Posterior Medial Thalamic Nucleus - posterior limb of internal capsule -somatosensory cortex
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Orofacial Pain and Temp Pathway
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Trigeminal ganglion - spinal trigeminal tract - spinal trigeminal nucleus - decussates to ventral trigeminal tract - VPM - posterior limb of internal capsule - somatosensory cortex
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Orofacial Proprioceptive pathway
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Mesencephalic nucleus - bilaterally to Trigeminal Motor Nucleus - V3 to muscles of mastication
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Corneal Reflex
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Trigeminal ganglion - spinal trigeminal tract - spinal trigeminal nucleus - reticular formation - bilaterally to the facial motor nucleus (CN VII) - blink both eyes
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Cell bodies in the ventral horn are arranged loosely - but generally...
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Lateral = flexors
Medial = Extensors Ventral = distal muscles |
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Corticobulbar tract
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Motor cortex - genu of internal capsule - medial crus cerebri - synapse on red nucleus - motor CNs - reticular formation
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Corticobulbar tract synapse on red nucleus (ipsilaterally or bilaterally)
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ipsilaterally
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CNs that don't get corticobulbar synapses:
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I, II, VIII
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Only CNs to get only contralateral synapses from the corticobulbar tract
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XI and XII
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