William's crossward puzzle

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Across
  1. 4. automatic movement in response to a stimulus
  2. 5. gap between two neurons
  3. 7. special structure within the sensory system
  4. 8. cord tube like structure of neurons
  5. 9. controls memory, language, and thought
Down
  1. 1. disturbance that transfers energy
  2. 2. relating to material things
  3. 3. coordinates voluntary muscle movement
  4. 6. controls involuntary functions
  5. 7. photo receptor in the eye that distinguishes shapes