| Tract | Funiculus | Sensation | Decussation | Destination | | :--- | :--- | :--- | :--- | :--- | | Fasciculus gracilis (DCML – lower) | Posterior | Vibration, fine touch | Medulla | Thalamus | | Fasciculus cuneatus (DCML – upper) | Posterior | Vibration, fine touch | Medulla | Thalamus | | Lateral Spinothalamic | Lateral | Pain, temperature | Spinal cord | Thalamus | | Anterior Spinothalamic | Anterior | Crude touch | Spinal cord | Thalamus | | Posterior Spinocerebellar | Lateral (peripheral) | Unconscious proprio | None (ipsilateral) | Cerebellum |
| Tract | Origin | Function | |-------|--------|----------| | Lateral Corticospinal | Motor cortex | Skilled voluntary movement (contralateral) | | Anterior Corticospinal | Motor cortex | Axial/proximal movement (ipsilateral until decussation) | | Rubrospinal | Red nucleus | Flexor tone, upper limb coordination | | Vestibulospinal | Vestibular nuclei | Extensor tone, balance | | Reticulospinal | Reticular formation | Posture, gait modulation | | Tectospinal | Superior colliculus | Head/eye reflex to visual stimuli | ascending and descending tracts of spinal cord ppt
By the end of this presentation, learners will be able to: | Tract | Funiculus | Sensation | Decussation
Title: Descending Tracts (Motor Pathways) Content: Example tract slide (Dorsal column–medial lemniscus):