WVSOM -- Medical Neuroscience -- Somatosensory 2
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| What information does the trigeminal nerve carry back to the brain? | touch, temperature, pain and proprioception from the oral-facial cmplex to the brainstem
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| Where is the primary sensory neuron of the orofacial fine touch and vibration pathway? | trigeminal ganglion
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| Where do first order neurons synapse in the orofacial fine touch and vibration pathway? | chief sensory nucleus on ipsilateral side
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| Where do second order neurons of the orofacial fine touch and vibration pathwy project? | bilaterally thru the brainstem and synapse bilaterally in the VPM of the thalamus.
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| Where do the third order neurons of the orofacial fine touch and vibration pathway project? | from the VPM to the primary somatosensory cortex
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| Where do the primary neurons of the orofacial proprioceptive pathways have its soma? | Mesencephalic nuceus
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| Where do the mesencephalic nucleus project axons? | out bilaterally out to the trimgeminal motor nucleus then out the V3 branch of the trigeminal ganglion to innervate the muscles of mastication
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| Where is the primary sensory neuron of the orofacial pain and temperature pathway have its soma and wehre does it project? | trigeminal ganglion and projects into the brain stem where it synapses in the spinal trigeminal nucleus on ipsilateral side.
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| Where do second order neurons project? | from the soma in the spinal trigeminal nucleus to the contralateral side of the brainstem and ascend in the ventral trigeminal tract to synapse in the VPM
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| Where is the third order neurons of the orofacial pain and temperature pathway? | Project from the soma in the VPM to synapse in the primary somatosensory cortex
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| Explain the corneal reflex. | Touch the cornea, CN V then synapses in nucleus of spinal tract of V, goes to the RF then is sent back to the facial motor nucleus out thru C?N VII to blink.
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Created by:
tjamrose
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