Ch:9 The Nervous System

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Across
  1. 2. conduct impulses to the spinal cord
  2. 4. supplies motor impulses to the neck muscles
  3. 6. any change that returns the membrane potential closer to its resting value
  4. 8. includes the brain and spinal cord
  5. 11. the outermost layer of the schwann cell
  6. 12. neuron fibers that conduct impulse to the cell body
  7. 13. carry impulses from the cns to muscles and glands
  8. 15. axons are covered by this white-ish,fatty substance
  9. 16. any tissue or organ that carries out a nervous system command
  10. 17. form the myelin sheath of cns neurons
  11. 18. sends numerous branches to the shoulder,arm,forearm,wrist,and hand.
  12. 19. any collection of nerve cell bodies located outside the cns
  13. 20. star-shaped cells serving many functions.
Down
  1. 1. act has phagocytes to remove pathogens,impurities,and dead neurons
  2. 3. make up of all the nerves outside of the CNS
  3. 5. the point of junction for transmitting the nerve impulse
  4. 7. when the membrane falls below its resting value
  5. 9. support cells
  6. 10. line ventricles in the brain.
  7. 14. relay information from place to place within the cns