Electrochemical Signal Crossword

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Across
  1. 2. What is the name of the long slender projection of a nerve cell? Found in the middle of the myelin sheaths.
  2. 4. When the speed of signal conduction decreases, what symptoms can you expect to appear?
  3. 5. What is the name given for a bundle of fibers that receives and sends messages between the body and the brain?
  4. 9. What is the name of the process where the myelin sheaths start to decompose and break apart?
  5. 12. What is the peak of the spike on the electrochemical signals graph?
  6. 14. What does the (K) in K+ stand for?
  7. 15. What part of action potential forces the cell to undergo an electrical shift in charge distribution?
  8. 17. What are the names for the sleeves of fatty tissues that protect your nerve cells? Kind of looks like a corn dog.
  9. 18. What is the name for information messengers who utilize electrical impulses and chemical signals?
  10. 19. What does the (Na) in Na+ ions stand for?
Down
  1. 1. What part of action potential returns the membrane potential back into a negative?
  2. 2. What type of disease makes the immune system attack myelin sheaths?
  3. 3. What part of action potential occurs immediately after stimulation with a nerve or muscle cell?
  4. 6. What is the name of the principle for when the response of the nerve or muscle cell is not dependent on the stimulus? Three words, with no spaces
  5. 7. What causes the spike of action potential?
  6. 8. What is being measured on the y-axis of the electrochemical signals graph?
  7. 10. What is the name of the structure that allows a neuron to pass through an electrical or chemical signal?
  8. 11. What travels very fast along neurons?
  9. 13. How many parts of action potential are there?
  10. 16. What is the term for the level of depolarization that the neuron must reach for action potential to occur?