Across
- 2. What is the name of the long slender projection of a nerve cell? Found in the middle of the myelin sheaths.
- 4. When the speed of signal conduction decreases, what symptoms can you expect to appear?
- 5. What is the name given for a bundle of fibers that receives and sends messages between the body and the brain?
- 9. What is the name of the process where the myelin sheaths start to decompose and break apart?
- 12. What is the peak of the spike on the electrochemical signals graph?
- 14. What does the (K) in K+ stand for?
- 15. What part of action potential forces the cell to undergo an electrical shift in charge distribution?
- 17. What are the names for the sleeves of fatty tissues that protect your nerve cells? Kind of looks like a corn dog.
- 18. What is the name for information messengers who utilize electrical impulses and chemical signals?
- 19. What does the (Na) in Na+ ions stand for?
Down
- 1. What part of action potential returns the membrane potential back into a negative?
- 2. What type of disease makes the immune system attack myelin sheaths?
- 3. What part of action potential occurs immediately after stimulation with a nerve or muscle cell?
- 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
- 7. What causes the spike of action potential?
- 8. What is being measured on the y-axis of the electrochemical signals graph?
- 10. What is the name of the structure that allows a neuron to pass through an electrical or chemical signal?
- 11. What travels very fast along neurons?
- 13. How many parts of action potential are there?
- 16. What is the term for the level of depolarization that the neuron must reach for action potential to occur?