DEA DEA Pharmacology and Drug Effects 2

Question 1

Based on its pharmacological effects on the central nervous system, methamphetamine is classified as which type of drug?

Accepted Answer

CNS stimulant

Answer

Methamphetamine is a potent CNS stimulant that causes massive release of dopamine, norepinephrine, and serotonin, producing increased alertness and euphoria.

Question 2

THC, the primary psychoactive compound in cannabis, produces its effects by binding primarily to which receptors?

Accepted Answer

Cannabinoid CB1 receptors

Answer

THC primarily binds to CB1 cannabinoid receptors in the brain, which are part of the endocannabinoid system regulating mood, memory, appetite, and pain.

Question 3

In pharmacology, what does the term 'half-life' of a drug refer to?

Accepted Answer

The time required for the body to eliminate 50% of the drug

Answer

Half-life refers to the time required for the concentration of a drug in the body to decrease by 50%, which determines dosing frequency and time to elimination.

Question 4

PCP (phencyclidine) produces its effects by primarily blocking which receptor type?

Accepted Answer

NMDA glutamate receptors

Answer

PCP produces dissociative anesthetic effects by blocking NMDA receptors, disrupting glutamate neurotransmission and causing detachment from reality.

Question 5

What is the primary life-threatening risk of combining opioids with benzodiazepines or other CNS depressants?

Accepted Answer

Synergistic respiratory depression leading to fatal overdose

Answer

Combining opioids with benzodiazepines causes synergistic CNS and respiratory depression, dramatically increasing the risk of fatal respiratory failure.

Drug Enforcement Administration (DEA) Practice Test

Drug Enforcement Administration (DEA) Practice Test

DEA DEA Pharmacology and Drug Effects 2