Nervous system

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Across
  1. 1. which protects nerves going into the brain
  2. 4. the endings of the nerve cell are called ----
  3. 5. what is the body part of the nerve cell
  4. 8. the mastermind of the nervous system
  5. 10. the system of nerves
Down
  1. 2. causes memory loss in the brain
  2. 3. what is in the front of the brain
  3. 6. what can the nerve feel
  4. 7. some toys are made for the pleasure of -------
  5. 9. the pain receptors
  6. 11. what do nebula gets use to see the insides of brains