Nervous System

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Across
  1. 5. singular extension from the cell body carries messages away
  2. 6. gray outer cortex of the brain
  3. 7. area where no myelin is present
  4. 10. outer brain covering
  5. 11. insulates supports protects neurons
  6. 14. the space between synapses
  7. 15. liquid made in the ventricles
  8. 19. many extensions from the cell body carries a message to
  9. 20. covers and protects the axon speeds nerve impulses
  10. 21. network of blood vessels in the Pia Mater
  11. 22. where messages go from one cell to the next
Down
  1. 1. three membranes covering the brain
  2. 2. this keeps drugs in the bloodstream out of the brain
  3. 3. chemical substances transmitting messages across synapse
  4. 4. lined cavity filled with CSF
  5. 8. shallow grooves in the brain
  6. 9. middle layer
  7. 12. elevated ridges between the sulci
  8. 13. largest part of the brain
  9. 16. covers the brain surface
  10. 17. nerve cells
  11. 18. deep grooves in the brain