The Nervous System

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