Ascending And Descending Tracts Of Spinal Cord Ppt -

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Fine touch, vibration, conscious proprioception (Upper body) Medulla (Internal arcuate fibers) Thalamus (VPL) →right arrow Somatosensory Cortex Pain, temperature Spinal cord (at segment level) Thalamus (VPL) →right arrow Somatosensory Cortex Anterior Spinothalamic Crude touch, pressure Spinal cord (at segment level) Thalamus (VPL) →right arrow Somatosensory Cortex Posterior Spinocerebellar Unconscious proprioception (Lower body) None (Stays ipsilateral) Cerebellum Anterior Spinocerebellar Unconscious proprioception/Motor feedback Spinal cord (Double decussation) Cerebellum Summary Table: Descending Pathways Tract Name System Class Primary Function Decussation Point Target Destination Lateral Corticospinal Fine, skilled voluntary movement of distal limbs Medulla (Pyramidal decussation) Lateral Anterior Horn Cells Anterior Corticospinal Voluntary control of proximal/axial posture muscles Spinal cord (at segment level) Medial Anterior Horn Cells Rubrospinal Extrapyramidal Facilitates upper limb flexor muscle tone Anterior Horn Cells Vestibulospinal Extrapyramidal Regulates balance and posture; excites extensors None (Primarily uncrossed) Anterior Horn Cells Reticulospinal Extrapyramidal Modulates tone, posture, and autonomic reflexes Various levels of brainstem Anterior Horn Cells Tectospinal Extrapyramidal Reflex orientation of head/neck to visual/auditory cues Cervical Anterior Horn Cells ascending and descending tracts of spinal cord ppt

Carries fine coordination info from the lower limbs; enters the cerebellum via the inferior cerebellar peduncle uncrossed. If you are converting this article text into