| A | B |
| Opium | a powerful and illegal drug that is made from a type of poppy |
| Methadone | a synthetic drug often used to treat heroin addiction |
| Heroin | an illegal and highly addictive drug whose users are at increased risk for HIV/AIDS |
| Syringe | a device made from a hollow tube and a needle to injects fluids into the body |
| Constipation | the condition of being unable to easily release solid waste from the body |
| Narcotics | a class of drugs often used to treat pain |
| Epidemic | the occurrence of more cases of a disease that is normally expected |
| Poppy | a plant used to make opium and opium derivatives |
| Codeine | cough medicine |
| Narcan | a drug to treat narcotic overdoses |
| Receptor | a specialized cell of group of nerve endings that responds to stimuli |
| Limbic System | a complex set of brain structures |
| Brainstem | base of the brain |
| Spinal Cord | a long nerve in the back |
| Cravings | an intense, urgent, or abnormal desire or longing |
| Overdose | an amount of a drug or medicine that is too much and usually dangerous |