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Spinal Tracts Made Simple. Info based on O'Sullivan 2008 pg83
Ascending Fiber System
Sensory Pathways; Transmits to the Brain
Dorsal Columns/Medial Lemniscal Tracts
Proprioception, Vibration, Tactile Discrimination.
A division of the Dorsal Columns System specifically dealing with the UPPER EXTREMITY
A division of the Dorsal Columns System specifically dealing with the LOWER EXTREMITY
Pain, Temperature, & Crude Touch
Controls Fine Motor, Balance, & Tone (Golgi Tendons)-Ascending Tracts
Chronic Pain-Ascending Tracts
Descending Fiber System
Motor Pathways; Transmits from the Brain to the Periphery
Motor; Important for Voluntary Motor Control; Motor Cortex
Controls Fine Motor, Balance (Postural Reflexes), & Tone-Descending Tracts
Assists in Motor Function
Chronic Pain-Descending Tracts
Assists in Head Turning Responses in Response to Visual Stimuli
Anterior Spinothalamic Tracts
Dull Aching Pain
Lateral Spinothalamic Tracts
Discriminative Fast Pain