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BOARDSspinal anatomy

IV. & V. Tracks

NameFunctionPathwayTract Direction
Corticospinal Precise & skilled voluntary movement precentral gyrus- pyramidal decussation- internucial neurons- alpha motor neurons Descending
Reticulospinal influence unskilled voluntary movements reticular formatioin- crossed & uncrossed to alpha moter neurons Descending
Reticulospinal reflex activity functions by facilitationg or inhibiting motor neurons Descending
Tectospinal Feflex postural movement to visual stimuli superior colliculus- cross & decend to cervical internuncial pools Descending
Rubrospinal Facilitates flexors & inhibits extensors Red Nucleus- cross and descend to internuncial pools Descending
vestibulospinal Facilitates extensors & inhibits flexors for BALANCE lateral vestifular nucleus- descend to internuncial pools Descending
Lateral Spinothalmic pain & temp periphery- DRG- cross segmentally & ascend to thalamus- to postcentral gyrus Ascending
Anterior Spinothalamic crude light touch periphery- DRG- cross segmentally & go to thalamus- postcentral gyrus Ascending
Dorsal Columns discriminative touch periphery- DRG- nuclei gracilis/cuneatus- cross at medulla & ascend to thalamus- postcentral gyrus Ascending
Posterior Spinocerebellar unconscious proprioception periphery- DRG- nucleus dorsalis- cross segmentally & ascend through superior cerebellar peduncle to cerebellum Ascending
Anterior Spinocerebellar unconscious proprioception periphery- DRG- cross segmentally & ascend through superior cerebellar peduncle to cerebellum Ascending
Spinotectal spino visual reflexes periphery- DRG- cross segmentally & ascend to superior colliculus Ascending
Spinoreticular Levels of consciousness periphery- DRG- ascend to nuclei of reticular formation Ascending
Spino-olivary Cutaneous & proprioceptive information periphery- DRG- cross segmentally & ascend to inferior olive- cross back through inferior peduncle to cerebellum Ascending
Created by: missyh23
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