Sensory Nerve Tracts
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Spinothalamic Tract 1 | Pain and temp | DRG | dorsal root either directly to lamina II or Lissauer's | Lamina II | ipsi
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| Spinothalamic Tract 2 | Pain and temp | Lamina I, V (interneurons coming from lamina II) | ventral white commissure | VPL of thalamus | Contra (crosses at ventral white commissure)
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| Spinothalmic Tract 3 | Pain and temp | VPL | post limb of IC | Broadman's Area 3,1,2 | ipsi
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| Spinoreticular Tract | arousing affect of painful stimuli, impact of pain on muscle tone | Lamina I, V (spinothalamic tract part 2) | with spinothalamic tract | reticular formation of medulla, pons, and midbrain | contra ((crosses at ventral white commissure with spinothalamic tract)
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| Dorsal Columns/Medial Lemniscus 1 | Touch and Proprioception | DRG | fasciculus cuneatus and fasciculus gracilis (above T6), fasciculus gracilis only below T6 | nucleus cuneatus (upper body) or nucleus gracilis (lower body) | ipsi
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| Dorsal Columns/Medial Lemiscus 2 | Touch and Proprioception | nucleus gracilis or nucleus cuneatus | sensory decussation to medial lemiscus | VPL of thalamus | contra (crosses at the sensory decussation-internal arcuate fibers)
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| Dorsal Columns/Medial Lemiscus 3 | Touch and Proprioception | VPL | post limb of IC | Broadmans' Area 3,1,2 | ipsi
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Created by:
jdiesel23
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