Nervous system

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Across
  1. 4. – An automatic, rapid response to a stimulus.
  2. 5. – The division of the nervous system outside the brain and spinal cord.
  3. 6. – The "information highway" protected by vertebrae (Spinal Cord).
  4. 10. – The long fiber that carries impulses away from the cell body.
  5. 11. – A change in the environment that causes a reaction.
  6. 12. – The largest part of the brain; handles thinking and memory.
  7. 14. – The branch-like part of a neuron that receives messages.
Down
  1. 1. – The tiny gap between two neurons.
  2. 2. – Part of the brain that controls balance and coordination.
  3. 3. – The fatty coating that helps impulses travel faster.
  4. 6. – Neurons that pick up stimuli from the environment.
  5. 7. – Controls involuntary actions like breathing and heart rate.
  6. 8. – The division containing only the brain and spinal cord.
  7. 9. – The basic building block (cell) of the nervous system.
  8. 13. – Neurons that send signals to muscles or glands to take action.