CRS Substance Abuse Knowledge 2 — Questions and Answers
Question 1: Which neurotransmitter system is most directly implicated in the rewarding effects of opioids?
- Serotonergic system
- Dopaminergic mesolimbic pathway (Correct answer)
- Cholinergic system
- GABAergic system
Correct answer: Dopaminergic mesolimbic pathway
Opioids stimulate dopamine release in the nucleus accumbens via the mesolimbic pathway, producing reward and reinforcement.
Question 2: A client reports drinking heavily every night but insists they can stop anytime. This is best described as which defense mechanism?
- Rationalization
- Projection
- Denial (Correct answer)
- Sublimation
Correct answer: Denial
Denial is the refusal to acknowledge the existence or severity of a problem, common in early-stage substance use disorders.
Question 3: What is the primary mechanism by which benzodiazepines produce their sedative effect?
- Blocking dopamine reuptake
- Enhancing GABA-A receptor activity (Correct answer)
- Inhibiting serotonin synthesis
- Activating mu-opioid receptors
Correct answer: Enhancing GABA-A receptor activity
Benzodiazepines bind to GABA-A receptors and enhance the inhibitory effects of GABA, producing sedation and anxiolysis.
Question 4: Which of the following is a long-acting opioid agonist used in medication-assisted treatment that also blocks the euphoric effects of other opioids?
- Naloxone
- Methadone
- Buprenorphine/naloxone (Correct answer)
- Naltrexone
Correct answer: Buprenorphine/naloxone
Buprenorphine/naloxone (Suboxone) is a partial opioid agonist combined with naloxone to deter misuse and block euphoria from other opioids.
Question 5: The concept of 'euphoric recall' in substance use disorders refers to:
- Accurate memory of negative consequences
- Selectively remembering the pleasurable aspects of drug use (Correct answer)
- A flashback caused by hallucinogens
- Improved memory function during intoxication
Correct answer: Selectively remembering the pleasurable aspects of drug use
Euphoric recall is the tendency to remember only the positive feelings associated with substance use, minimizing memories of harm.
Question 6: Which class of drugs is associated with a potentially fatal withdrawal syndrome involving seizures and delirium tremens?
- Opioids
- Stimulants
- Cannabis
- Central nervous system depressants (Correct answer)
Correct answer: Central nervous system depressants
Withdrawal from CNS depressants such as alcohol and benzodiazepines can cause seizures and delirium tremens, which are life-threatening.
Question 7: A person who requires increasingly larger doses of a substance to achieve the same effect is demonstrating:
- Withdrawal
- Sensitization
- Tolerance (Correct answer)
- Cross-dependence
Correct answer: Tolerance
Tolerance occurs when the body adapts to a substance so that higher doses are needed to produce the original effect.
CRS Substance Abuse Knowledge 2
Which neurotransmitter system is most directly implicated in the rewarding effects of opioids?