easy

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Across
  1. 1. Cord What part of the body carries signals from the brain to the muscles?
  2. 3. What organ controls smell, taste, and other body functions in fish?
  3. 4. What type of movement happens automatically, without thinking?
Down
  1. 1. What is the tiny gap where one neuron passes a signal to the next?
  2. 2. What are the special cells that send messages in the nervous system?