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Chapter 5 Drugs

Chapter 5 Drugs. Drug dependence & Types of Drugs. Drug Dependence & Types of Drugs. Objectives: Students will be able to compare and contrast psychological and physical dependence. Students will be able to name and classify the commonly abused drugs. Introduction. What is a drug?

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Chapter 5 Drugs

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  1. Chapter 5 Drugs Drug dependence & Types of Drugs

  2. Drug Dependence & Types of Drugs Objectives: • Students will be able to compare and contrast psychological and physical dependence. • Students will be able to name and classify the commonly abused drugs.

  3. Introduction What is a drug? • A natural or synthetic substance that is used to produce physiological or psychological effects. Importance to forensic science? • 75% of evidence evaluated by crime labs is drug related.

  4. Drug Dependence Factors affecting drug dependence include: • Nature of the drug • Route of administration • Dose • Frequency of administration • An individual’s rate of metabolism

  5. Drug Dependence Non-drug factors affecting drug dependence include: • Personality of the user • Expectations about drug use • Society’s attitudes and possible responses • Setting in which the drug is used

  6. Drug dependence Psychological dependence: The conditioned use of a drug caused by underlying emotional needs Physical dependence: Physiological need for a drug brought about by its regular use and characterized by withdrawal sickness when administration of the drug is abruptly stopped.

  7. Types of Drugs • Narcotic – a drug that induces sleep and depresses vital body functions such as blood pressure, pulse rate, and breathing rate Includes: Opiates-morphine, heroin, codeine Synthetic opiates-methadone, oxy-contin Analgesics- substances that decrease pain.

  8. Types of Drugs • Hallucinogen-a substance that induces changes in normal thought processes, perceptions, and moods Includes: Marijuana, LSD, PCP

  9. Types of Drugs • Depressant-a substance that slows down, or depresses, the functions of the central nervous system Includes: Alcohol Barbiturates (“Barbitals”, Quaalude) Anti-psychotic/anti-anxiety drugs (Miltown, Librium, Valium) Inhaled volatile substances (glue, gasoline, etc.)

  10. Types of Drugs • Stimulant-a substance that speeds up, or stimulates, the central nervous system Includes: Amphetamines/methamphetamines Cocaine/Crack

  11. Types of Drugs • Club drugs-synthetic drugs often used at clubs, bars, etc. Includes: MDMA (Ecstasy) GHB (gamma-hydroxybutyrate) Rohypnol (“Roofie”) Ketamine Methamphetamine

  12. Types of Drugs • Anabolic Steroids-synthetic compounds chemically related to the male sex hormone testosterone that are used to promote muscle growth

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