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Transcript
Module 22 Notes Drugs Psychoactive Drug A chemical substance that alters ______, _______, or ______ Three most commonly used psychoactive drugs: * * * Induce an altered state of consciousness Dependence A state of physiological and/or psychological need to _________________________________. _________ follows if the drug is discontinued Withdrawal The _______ and _______ that follow when a person who is dependent on a drug ______ the use of the drug Withdrawal symptoms are usually the ______ of the drug’s effects Tolerance Reduced ________ to a drug, prompting the user to ________ the dosage to achieve ______ previously obtained by lower doses of the drug Neurotransmission - The process whereby neurons ____________________ Neurotransmission, especially in the _____ and _______, helps explain the effects of psychoactive drugs. - Psychoactive drugs interfere with normal ____________. Reuptake Process where the _______neurotransmitter chemical is _________by the sending neuron Psychoactive drugs affect synapses and neurotransmitters in three ways: 1. 2. 3. Five Psychoactive Drug Categories 1. 2. 3. 4. 5. Depressants Drugs that ______ neural activity and _____ body functioning Includes _____ and ________ Alcohol Found in beer, wine, and liquor The _____ most used psychoactive drug (caffeine first) Slows thinking, and impairs _______ activity Blood Alcohol Content (BAC) A measure of how much _______ is in a person’s bloodstream Alcohol _______ the parts of the brain responsible for controlling ________ and making ________ Alcohol, Memory, and Sleep Studies have shown that alcohol impairs memory by ________the processing of events into ______ term memory Alcohol plays another trick with our memory, experiences from the _________ state may not transfer to the _______ state Alcohol impairs ______sleep, further _______memory storage Sedatives Drugs that reduce _______ or induce ______ Also called ___________ Include barbiturates and benzodiazepines Barbiturates Drugs that _______ the activity of the central nervous system and thereby reduce _______ - Can be lethal in overdose and interact with other drugs, especially ________ Impair both _______ and __________ Can create tolerance and dependence Benzodiazepines Drugs that ________ that activity of the central nervous system without most of the ____ _____ associated with barbiturates Include Valium and Xanax Can create dependency Opiates Drugs that depress _____ _______, temporarily lessen _____ and ______ Include: opium, morphine, and herion Morphine Strong sedative and pain-relieving drug derived from _________ Works by preventing pain _______ from firing or releasing pain-signaling neurotransmitters into the synapse Endorphins Natural, opiate-like neurotransmitters linked to pain ______ and to ______ Body’s natural _____ _____ Stimulants Drugs that ______ neural activity and ______ ____ body functions Include: caffeine, nicotine, amphetamines, and cocaine Caffeine _________ found in coffee, chocolate, tea and some soft drinks Provides user with sense of _______ energy, mental ________, and forced _________ Blocks neurological receptor sites that, if activated, ______ the central nervous system Nicotine Stimulant found in _______ Effects similar to those of _________ Very ______ and does not stay in the body very long Cocaine - Stimulant derived from leaves of the ______ plant Crack- cocaine crystals Blocks the ______ of certain neurotransmitters Dependency is ______ and severe; places extreme strain on __________ system Amphetamines Drugs that stimulate neural activity, speeding up body functions, with associated _______ and ____ changes Includes: speed, uppers, and methamphetamines Mimic ________ Can cause irreversible changes in _______ Hallucinogens Drugs that distort _______ and evoke sensory images in the absence of sensory input Includes: LSD and Ecstasy Sometimes called “_________” Lysergic Acid Diethylamide (LSD) Powerful _________ drug Also known as “______” The effects vary from person to person Users can be dangerous to themselves and others. Ecstasy Hallucinogenic drug that produces lower ________, pleasant feelings, and greater ________ of others Also called MDMA, X , ADAM or Love Drug Even moderate users may experience ________ brain damage Marijuana Leaves, stems, resin, and flowers from the _____ plant that, when smoked, lower _______ and produce feelings of _______ and mild _______ _______ is the active ingredient Disrupts memory; _______ damage from smoke