lecture 17 drug abuse

lecture 17 drug abuse - 11/24/2008 1 Lecture 17 : Drug...

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Unformatted text preview: 11/24/2008 1 Lecture 17 : Drug Abuse Overview Prevalence Definition Definition Routes of administration Long-term effects Mechanisms of drugs Classification Drugs: widely consumed by our society % In 2002: 19.5 million Americans (8.3% of the population) were using at least one illicit drug at the time. % 71 million Americans are current tobacco users (mostly cigarette smokers), 129 million drink alcohol, and of the these, about 16 million were heavy drinkers - 5 or more drinks at one time on 5 or more days within 30 days 11/24/2008 2 Drugs effects are studied at different levels % Psychopharmacology The study of the effects of drugs on behavio drugs on behavior. % Pharmacodynamics The study of the ways in which a drug affects the living organism and the organs of the body. % Pharmacokinetics The study of how a drug moves through the body, including the processes of absorption, metabolism, distribution to tissues, and elimination. The Definition of a Drug % Drug Any substance we can take into our body that has the power to change us either functionally or structurally. % Psychoactive drug A drug that affects mental functioning. Also called psychotropic or mind-altering drugs Exert their influence through their actions on the nervous system, particularly the brain and spinal cord. So how quickly it gets to the CNS is important. 11/24/2008 3 Routes of Administration All drugs must be absorbed into the bloodstream in order to produce their psychoactive effects. Oral Ingestion The administration of a drug through the mouth....
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lecture 17 drug abuse - 11/24/2008 1 Lecture 17 : Drug...

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