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Check Yourself Name Date How Do Drugs Work? 1 2 3 4 5 6 7 8 9 10 11 12 14 13 15 16 17 18 19 20 21 22 23 24 25 ACROSS 3. Space between two neurons 5. Cause for tobacco dependence 7. Brain part for integration of information, planning 8. Chemical signal carried through the blood 9. Amount of drug given 11. Fastest way to get a drug to the brain 12. Agency responsible for regulating pharmaceuticals 15. Where most drugs are broken down 16. Transmitter in the sympathetic branch 20. Transmitter in the mesolimbic system 21. Most widely used depressant 22. Axons, dendrites are part of the nerve . 23. Most rapid method of injection is into a . 24. Potent CNS drugs must be soluble. 25. Type of modern brain scan using radioactive chemicals DOWN 1. Reduced effect of a drug after repeated use 2. Opiate-like substance found in the brain 4. Nervous system controlling heart, pupils of the eye, etc. 6. Chemical that affects a living organism 7. Powerful stimulant derived from a South American plant 10. An signal travels along the axon. 13. Drug that makes you drowsy, drunk, uncoordinated 14. Drug name used by several companies 17. Inactive or “fake” drug 18. Common term for opium, morphine, heroin, etc. 19. Neuron part that carries electrical signals to the terminals 20. Neuron part that picks up signals from other neurons 25. Hallucinogen sometimes smoked on marijuana 125