Nervous system

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Across
  1. 2. signaling cells of the nervous system
  2. 6. a signaling molecule that relays messages between presynaptic and postsynaptic cells
  3. 8. this part of nervous system relay signals to smooth and cardiac muscle, and to glands
  4. 9. automatic response to stimulation
Down
  1. 1. branches that receive the chemical signals
  2. 3. this part of nervous system relay commands to skeletal muscles
  3. 4. is specialized for sending messages
  4. 5. supporting cells of nervous tissue
  5. 7. region where an axon terminal sends chemical signals to a neuron