C-8

T-12

L-5

S-5

C

• signals arise from cranial and sacral regions

• signals arise from lumbar and thoracic regions

• 1. Anterior association area
• 2.premotor associaion cortex
• 3. Prmary motor cortex
• 4. Primary somatosensory cortex
• 5. Somatosensory association area
• 6. Posterior Assosication area
• 7. Visual Assocation area
• 8. Primary visual cortex
• 9. Frontal eye field
• 10. Broca's area
• 11.primary auditory cortex
• 12. Auditory association area
• 13. Wernicke's area

Dorsal Root

• conveys incoming sensory signals from skin, muscle, and body organs

• contains axons motor neurons emerging from the ventral horn of spinal cord grey matter
• conduct motor signals to skeletal muscle

• aligodendrocytes
• microglia
• estrocytes