How Neurons Communicate

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Across
  1. 1. The tree-like extension of the neuron cell that receives the message
  2. 3. The type of ion that is more abundant inside the cell
  3. 4. The long thread-like part of the neuron that the message is sent down
  4. 8. A small electrical pulse by which neurons communicate
  5. 10. A tiny cell of the nervous system
  6. 11. A charged particle
Down
  1. 1. When a cell becomes more positive or less negative
  2. 2. The outer layer of a cell that allows particles in and out of the cell
  3. 5. The chemical released to communicate with other neurons
  4. 6. The final end of the nerve cell that releases the electrical impulse.
  5. 7. The structure that maintains the membrane gradient. Hint: The sodium potassium _______.
  6. 9. What is the symbol for sodium