1.Spinothalamic 2.Dorsal Column/Medial Leminscal 3.Spinocerebellar Name Function Origin Ending Location in Cord

Spinothalamic Sharp , Skin 1st order terminates in Ventral and Tract crude touch and Dorsal Gray Column, Lateral Column temperature 2nd order decussates in close to entry level and projects to contralateral VPL nucleus of , 3rd order projects to sensorimotor cortex Dorsal Fine touch, Skin, 1st order ascends spine Dorsal Column Column/Medial conscious joints, on ipsilateral side and Lemniscal , tendons terminates in two point nuclei, 2nd discrimination order decussate and project to the VPL of thalamus, 3rd order project to sensorimotor cortex System Function Origin Ending Location in Cord Spinocerebellar Unconscious 1st order neurons Lateral Tract proprioception cells, Golgi tendon synapse in spinal Column organs, touch and cord, 2nd order pressure receptors neurons ascend on the ipsilateral side and project to the cerebellar cortex 1.Corticospinal 2. Function Origin Ending Location in Cord Lateral Fine motor Motor and pre- Motor neurons Lateral column Corticospinal function (distal of ventral grey Decussates in Tract musculature) column pyramids of medulla

Anterior Gross and Motor and pre- Motor neurons Anterior column Corticospinal postural motor motor cortex of ventral grey Decussates after Tract function column the fibres has (proximal and descended axial musculature) System Function Origin Ending Location in Cord Rubrospinal Fine motor Motor neurons Lateral column Tract control of upper of upper limb limb flexors flexors Vestibulospinal Maintenance of Lateral and Motor neurons Anterior column Tract posture medial of axial vestibular musculature nucleus and limb extensors Reticulospinal Co-ordination of Reticular Motor neurons Anterior column Tract extensor motor formation of axial activity musculature for locomotion and limb and postural extensors control Tectospinal Coordination of Motor neurons Anterior column Tract head and eye controlling head movements movement 1.Syringomyelia 2.Brown-Sequard Syndrome 3.Sub Acute Combined Degeneration Condition Pathology Tracts Involved Signs/Symptoms

Syringomyelia Cyst or cavity around Loss of pain and central cord temperature sensation Brown-Sequard Hemisection of the Spinothalamic tract, Contralateral loss of Syndrome spinal cord Dorsal Column, pain and Corticospinal tract temperature, ipsilateral loss of joint position sense, ipsilateral UMN signs

Sub Acute Combined Vitamin B12 Dorsal Column, Bilateral loss of Degeneration deficiency Corticospinal tract, vibration and joint position sense, bilateral UMN signs and ataxia