Chapter 10- Substance Related Disorders

Chapter 10- Substance Related Disorders - CHAPTER 10...

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Unformatted text preview: CHAPTER 10: SUBSTANCE-RELATED DISORDERS Drug- any substance other then food that affects our bodies or minds • May cause temp changes in behavior, emotion or thought Substance Abuse- a pattern of behavior in which ppl rely on a drug excessively and regularly bringing damage to relationships functioning poorly at work or putting themselves or others in danger Substance Dependence (Addiction)- ppl organize their lives around a drug possibly building a tolerance to it and experiencing withdrawal symptoms when they stop taking it. Tolerance- the adjustment that the brain and the body make to the regular use of certain drugs so that ever larger doses are needed to achieve the earlier effects Withdrawal- unpleasant sometimes dangerous reactions that may occur when ppl who use a drug regularly stop taking or reduce their dosage of the drug • 9.4% of all adults in US (22 million) display pattern of addiction o 26% of those get help • 94 million ppl have tried an illegal drug • 28 million ppl used illegal drug w/in past year • 25% of high school seniors used an illegal drug in the past month • Several categories of drugs o Depressants Alcohol, opioids Slow CNS o Stimulants Speed CNS Cocaine, meth o Hallucinogens LSD Cause delusions and hallucinations and other powerful changes in sensory perception o Cannabis Weed Mixture of hallucinogenic, depressant and stimulant effects Polydrug Use- taking more than one drug at a time DEPRESSANTS • Slow CNS • Reduce tension and inhibitions and may interfere w/ a person judgment motor activity and concentration • 3 most widely used o Alcohol, sedative-hypnotic drugs, opioids ALCOHOL • 2 billion ppl worldwide drink • 66% of ppl drink from time to time • Nearly 7% of ppl over age 7 are heavy drinkers o Having at least 5 drinks on at last five occasions each month • Males outnumber females 3:1 Binge-Drinking Episode- when ppl consumer 5+ drinks in a single occasion Ethyl Alcohol- chemical found in alcoholic drinks, quickly absorbed into the bloodstream through the lining of the stomach and the intestine • EA acts to depress functioning by binding to various neurons o Likes GABA best GABA carried inhibitory messages (stop firing neurons) When binds GABA shuts down neurons helping to relax drinker • Steps o Slows down areas of brain that control judgment & inhibition Ppl become looser, more talkative, and often more friendly o Slows down additional areas of CNS Unable to make good decisions, speech slurs, memory fades Concentration- Blood Alcohol Level • Women have less alcohol dehydrogenase in their stomach so they get drunk faster •...
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This note was uploaded on 03/04/2010 for the course PSYCHOLOGY 031 taught by Professor Summons during the Fall '08 term at Kirkwood Community College.

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Chapter 10- Substance Related Disorders - CHAPTER 10...

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