Nervous System

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Across
  1. 2. The part of a neuron that sends signals
  2. 5. Potassium leaves the neuron and reduces its voltage
  3. 9. A nerve cell that communicates and integrates
  4. 10. Glial cell that wraps & insulates CNS neurons
  5. 12. Ion found outside of a resting neuron
  6. 14. Involuntary "automatic" division of the PNS
  7. 15. Acts as a relay between nerves
  8. 16. AKA the cell body; contains organelles
  9. 21. When a neuron reaches -55 mV
  10. 22. Glial cell that feeds & supports PNS neurons
  11. 23. Glial cell that makes cerebrospinal fluid
  12. 24. The part of a neuron that receives signals
  13. 25. A sensory ___ detects stimuli
  14. 27. When a neuron is at -70 mV
  15. 29. Includes nerves, ganglia, and enteric plexuses
Down
  1. 1. Ion found inside of a resting neuron
  2. 3. ___ matter in the CNS is used for integration
  3. 4. Glial cell that kills pathogens
  4. 6. Includes the brain and spinal cord
  5. 7. Glial cell that wraps & insulates PNS neurons
  6. 8. The end of an axon is an axon ___.
  7. 11. Glial cell that feeds & supports CNS neurons
  8. 13. Sodium raises the neuron's voltage to +30 mV
  9. 17. Many layers of membrane insulating a neuron
  10. 18. Voluntary division of the PNS
  11. 19. An enteric ___ regulates digestion
  12. 20. Carries nerve signals long distances in the PNS
  13. 22. Where 2 neurons meet/communicate
  14. 26. Involuntary digestive division of the PNS
  15. 28. ___ matter in the CNS is used for fast communication