The Nervous System

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Across
  1. 2. Composed of Brain and Spinal Cord
  2. 4. cells that Wrap around a single nerve axon
  3. 6. Provide neurotransmitters
  4. 12. Insulation made of a fatty substance
  5. 13. Make the myelin sheath
  6. 15. Contain cell body, axon and dendrites
  7. 18. Small spider-like cells that engulf dead cells and bacteria
  8. 20. Rest and Repair
  9. 21. Bundles of nerve fibers in the CNS
  10. 22. Cluster of neuron cell bodies in the PNS
Down
  1. 1. Conducts impulses away from cell body
  2. 3. Fight or Flight
  3. 5. Bundles of nerve fibers in the PNS
  4. 7. Nerves that go to skeletal system under voluntary control
  5. 8. Conduct impulses towards the cell body
  6. 9. Nerves that Go to smooth and cardiac muscle under involuntary control
  7. 10. Star-shaped cells that protect blood brain barrier
  8. 11. Matter that Interprets sensory information from various parts of the body
  9. 14. Matter that conducts, processes and sends information
  10. 16. Gaps between adjacent Schwann cells (nodes of)
  11. 17. Cluster of neuron body cell bodies in the CNS
  12. 19. Outermost part of myelin sheath, essential for repair
  13. 20. Carries information to and from the CNS