Central nervous system

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Across
  1. 1. NERVE 7. Long, thin bundle of nerve fibers outside the CNS (7 letters)
  2. 4. 5. Major division of the CNS responsible for conscious thought and complex actions (5 letters)
  3. 6. 6. Part of the brain responsible for balance and coordination (7 letters)
  4. 8. 8. Protective layer surrounding the brain and spinal cord (7 letters)
  5. 9. 3. Long, thin bundle of nerve fibers within the CNS (5 letters)
  6. 10. 9. Carries messages from the brain and spinal cord to muscles (5 letters)
Down
  1. 2. 4. Carries messages throughout the body (5 letters)
  2. 3. 1. The fatty substance that insulates some nerve fibers (7 letters)
  3. 5. 10. Messenger chemicals that transmit signals between neurons (6 letters)
  4. 7. 2. Cluster of nerve cell bodies outside the CNS (6 letters)