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Sensory Nerve Tracts

Tract NameFunctionOriginCourseTerminationLaterality
Spinothalamic Tract 1 Pain and temp DRG dorsal root either directly to lamina II or Lissauer's Lamina II ipsi
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)
Spinothalmic Tract 3 Pain and temp VPL post limb of IC Broadman's Area 3,1,2 ipsi
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)
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
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)
Dorsal Columns/Medial Lemiscus 3 Touch and Proprioception VPL post limb of IC Broadmans' Area 3,1,2 ipsi
Created by: jdiesel23
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