| A | B |
|---|
| Carcinogen | Any substance that causes cancer. |
| Craving | A strong desire or urge. |
| Dopamine | A neurotransmitter involved in the brain’s interpretation of pleasure. |
| Frontal Cortex | A region of the brain responsible for decision making, problem solving, and planning. |
| Gateway Drug Theory | The theory that use of on illegal substance will lead to use of others. |
| Hashish | The concentrated resin from the flowering tops of the female hemp plant. |
| Marijuana | The dried leaves and flowers of the hemp plant ( Cannibis sativa and Cannibis indica). Marijuana, known by street names, “pot”. “Weed”, and “herb”, can be smoked or eaten. |
| Serotonin | A neurotransmitter involved in the brain’s regulation of mood, appetite and sensory perceptions. |
| Physical Dependence | The process that occurs when the body has adapted to the presence of a drug and reduces its own production of neurotransmitters. When drug users develop physical dependence, withdrawal symptoms occur if use of the drug is reduced or stopped abruptly. |
| Psychological Dependence | A craving or compulsion for repeated use of a drug despite any adverse effects that may occur. |
| Tetrahydrocannabinol (THC) | The major active chemical in marijuana and hashish which causes mind-altering effects. |
| Tolerance | A process involving the body’s lessening response to a drug, making it necessary for users to take higher doses of the drug to achieve the same effects once reached with lower doses. |
| Withdrawal | Symptoms of illness that occur when an addict discontinues use of a drug. |
