The Nervous System

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Across
  1. 3. garbage men of the CNS
  2. 5. division that stimulates the rest and digest response
  3. 6. part of the PNS and conveys impulses to to the CNS
  4. 7. create the myelin sheath around the CNS neurons
  5. 9. disease that occurs when the body starts to kill all of the oligodendrocytes
  6. 11. the somatic division is under __________________ control
  7. 14. there is a higher concentration of sodium ________________ the neuron
  8. 15. part of the PNS motor division that communicates to the skeletal system
  9. 16. the gap between adjacent neurons
  10. 17. PNS cells that serve the same function as oligodendrocytes
  11. 18. abbreviation for the part of the nervous system that includes all nerves outside of the brain and spinal cord
  12. 20. occurs when sodium enters the cell after being stimulated by a neurotransmitter
  13. 23. contains vesicles with neurotransmitters
  14. 25. part of the PNS that carries impulses to the effector organs
  15. 28. conducts impulses away from the cell body
  16. 29. fibers that extend from the cell body
  17. 31. processes and interprets the input and makes sense of the decisions
  18. 32. supporting cell of the CNS that nourishes the neurons
  19. 33. part of the neuron that contains the usual organelles and nucleus
  20. 34. the resting charge on the inside of the neuron
Down
  1. 1. effects a response
  2. 2. means that there are fewer positive ions inside the cell than outside the cell
  3. 4. will communicate with the heart, digestive system, and endocrine glands
  4. 8. division that stimulates the fight or flight response
  5. 10. body system that has the same function as the nervous system
  6. 12. effector organs for the motor division include muscles and ______________
  7. 13. protective cells of the PNS
  8. 19. gathers information and monitors changes
  9. 21. occurs when potassium flowing out of the cell reestablishes the electrical conditions within the cell
  10. 22. the part of the axon in between the myelin sheath links
  11. 24. fatty substance that wraps around the axon
  12. 26. conduct impulses toward the cell body
  13. 27. junction between neurons
  14. 30. abbreviation for the part of the nervous system that includes the brain and spinal cord