The nervous system intro

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Across
  1. 1. the center of sleeping
  2. 2. The word 'inger' in English
  3. 5. the center of your emotions
  4. 6. the connection of two neurones
  5. 7. the center of your memories
  6. 8. the organiser of all senses (except smell)
  7. 9. a bunch of neurones
Down
  1. 1. the primary breathing center
  2. 3. The highest center for vital functions
  3. 4. the potential that's big enough to stimulate a neurone