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48 Cards in this Set
- Front
- Back
The faster a psychoactive drug reaches its target in the CNS the |
greater its reinforcing effect
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The route of drug administration that delivers a drug to the brain the quickest is
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inhaling or insufflation
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True or False - The faster the drug gets to the brain the more potent the experienced effect
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True
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Injection bypasses most of the body's defenses and is therefore the
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most dangerous method of administration.
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Describe mucosal membrane absorption methods of drug administration
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rectal/vaginal suppositories, buccal, sublingual
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After administration, psychoactive drugs travel to the brain via
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circulatory system
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As drugs travel to and through every organ of the body they
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are stored, are biotransformed and cause direct effects
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An adult person has approximately 6 to 8 quarts of blood in their circulatory system. The amount of blood in a 12-year-old child's circulatory system is approximately
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3 to 4 quarts
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A developing fetus is very vulnerable to psychoactive drugs because
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the blood-brain barrier is still not completely formed
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The mechanism for processing, using, and inactivating a foreign or toxic substance is known as drug
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metabolism
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The key organs for metabolism and excretion of drugs from the body are the
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liver and kidneys
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The half-life of a drug is a measure of the time that refers to how long it takes to
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inactivate or eliminate the drug
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Factors that affect the half-life of drugs
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emotions, gender, heredity
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Exaggeration of effects that result when two or more drugs are taken at the same time is called
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drug synergism
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Dispositional or metabolic tolerance means
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the body speeds up the metabolism of the drug in order to eliminate it.
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Pharmacodynamic or cellular dynamic tolerance means
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nerve cells become less sensitive to the effects of the drug and even produce an antidote or antagonist to the drug
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Reverse tolerance means
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after the user had been tolerant to a drug for some time they become more sensitive to the drug
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Behavioral conditioning tolerance means
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the brain compensates for the effects of the drug with other non affected neurons
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Cross tolerance means
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as tolerance develops to one drug it develops to other drugs as well.
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The biological adaptation of body organs to depend on drugs just to stay functional is
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tissue dependence
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Withdrawal is best defined as
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the body's attemptt to rebalance itself after cessation of prolonged use of a psychoactive drug
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Protracted withdrawal is defined as
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environmental triggers or cues that cause a flashback or recurrence of withdrawal.
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Post-acute withdrawal syndrome or PAWS is defined as
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persistence of subtle emotional and physical withdrawal problems.
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The human nervous system is made up of how many nerve cells
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100 billion
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Human nerve cells develop a network of how many connections
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100 trillion
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What do psychoactive drugs do to the nervous system
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alter information sent to the brain from the environment, disrupt messages sent back to the various part of the body, disrupt thinking.
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Name parts of the old or primal brain
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cerebellum, mesocortex, brainstem
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What are the functions of the old brain
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basic emotions like anger, fear, hunger, lust, imprinting of survival memories, regulating respiration, heartbeat, and body temperature
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The new brain consists of
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cerebral cortex and cerebrum
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The reward/reinforcement pathway functions to
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provide feelings of satisfaction when a need is fulfilled, give a surge of relief when pain is diminished, signal other parts of the brain when satisfaction has been achieved.
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Those with substance dependence disorders feel an intense need to continue drug use because
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their stop switch in ineffective, their brain chemistry has been altered, their more/go switch is overactive
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What are the phases of reward/reinforcement circuit
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activation of the nucleus accumbens septi to do the drug or behavior again and again, anticipation of the drug or behavior which causes craving for the stimulus, activation of the orbitofrontal cortex which affects the decision making process for continued use of behavior.
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The nervous system is made up of unique nerve cells known as
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neurons
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What are the essential parts of a nerve cell
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axons and dendrites
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Messenger brain chemicals that communicate between neurons are known as
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neurotransmitters
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Neurotransmitters are synthesized within the neuron and then stored in tiny sacs called
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vesicles
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Molecules that are produced or originate from within the body are best described as
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endogenous
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Which of the following is an exogenous substance? Serotonin, Dopamine, or Morphine
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Morphine
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The brain’s main inhibitory neurotransmitter is
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GABA
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Neurotransmitters activate neurons by slotting into a
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compatible receptor
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Excitatory neurotransmitters affect neurons by
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increasing their firing or pulses
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When a cell decreases the number of receptor sites to slow message transmission it is called
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down regulation
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Drugs that bind to receptors and mimic or facilitate the effects of neurotransmitters are
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agonists
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Habituation to drug use is
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development of a definite pattern of use with no major negative consequences
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Social/recreational drug use entails
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drug seeking behavior but no established pattern and no negative consequences
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What are the 3 name classifications for drugs
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Street names, trade names, chemical names
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True or False - Psychedelic drugs like LSD and psilocybin mushrooms are known as “all arounders”
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True
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Cocaine, methamphetamine, opium, and morphine are considered by the DEA to have a high abuse potential with severe psychic or physical dependence, and have limited medical use. They are considered to be which schedule
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Schedule II drug |