CADC Alcohol and Drug Counselor Pharmacology of Psychoactive Substances 2

Question 1

Which neurotransmitter system is primarily responsible for the reinforcing effects of opioids?

Accepted Answer

Dopaminergic system in the mesolimbic pathway

Answer

Opioids activate the mesolimbic dopamine pathway by disinhibiting dopamine neurons, producing reinforcing effects.

Question 2

Naltrexone is used in alcohol use disorder treatment primarily because it:

Accepted Answer

Blocks opioid receptors and reduces alcohol's rewarding effects

Answer

Naltrexone blocks mu-opioid receptors, reducing the euphoric and rewarding effects of alcohol consumption.

Question 3

Which of the following best describes the mechanism of action of benzodiazepines?

Accepted Answer

They potentiate GABA-A receptor activity, increasing chloride ion influx

Answer

Benzodiazepines bind to GABA-A receptors and enhance the effect of GABA, increasing chloride conductance and producing CNS depression.

Question 4

A client reports using methamphetamine and describes feeling extremely energetic and confident with a decreased need for sleep. These effects are primarily due to:

Accepted Answer

Massive release and reuptake blockade of catecholamines

Answer

Methamphetamine causes massive release of dopamine, norepinephrine, and serotonin while also blocking their reuptake transporters.

Question 5

The half-life of a drug refers to:

Accepted Answer

The time required for the plasma concentration to decrease by 50%

Answer

Half-life is the time required for the concentration of a drug in the blood plasma to be reduced by half.

Alcohol and Drug Counselor Exam Practice Test

Alcohol and Drug Counselor Exam Practice Test

CADC Alcohol and Drug Counselor Pharmacology of Psychoactive Substances 2