brain

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Across
  1. 4. the major excitatory neurotransmitter.
  2. 8. Synthesized in the basal forebrain
  3. 10. Monoamine - catecholamine
  4. 11. Synthesized from amino acid tryptophan
  5. 12. Synthesized in midbrain nuclei
  6. 13. reward and reinforcement
  7. 14. Inhibitory neurotransmitter
  8. 15. sends messages to many neurons at once
  9. 17. ionotropic receptor
  10. 18. synthesized from nitric oxide synthase
  11. 19. metabotropic neuro-receptor
  12. 20. opioid peptide
Down
  1. 1. painkiller
  2. 2. decrease chance of cell activation
  3. 3. promotes sleep
  4. 5. consists of a short chain of amino acids
  5. 6. Synthesized from amino acid tyrosine
  6. 7. synthesized at CNS promotes hunger
  7. 9. encourage action at cell
  8. 16. released from hypothalamus from pituitary