Podcast
Questions and Answers
What characterizes antagonist drugs in terms of neurotransmitter action?
What characterizes antagonist drugs in terms of neurotransmitter action?
Which classification of psychoactive drugs is primarily known for increasing bodily processes?
Which classification of psychoactive drugs is primarily known for increasing bodily processes?
According to the DSM-5 criteria, how many criteria must be met to be classified with a substance use disorder?
According to the DSM-5 criteria, how many criteria must be met to be classified with a substance use disorder?
What is one consequence of physical dependence on a drug?
What is one consequence of physical dependence on a drug?
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Which of the following is a characteristic effect of hallucinogens?
Which of the following is a characteristic effect of hallucinogens?
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Study Notes
Drug Actions and Effects
- Drugs primarily influence synaptic transmission.
- Agonists enhance neurotransmitter activity.
- Antagonists reduce neurotransmitter activity.
Psychoactive Drug Categories
-
Depressants: Suppress bodily functions.
- Examples: Alcohol, Valium
-
Opiates: Act as pain relievers (analgesics).
- Examples: Morphine, Heroin
-
Stimulants: Increase bodily functions.
- Examples: Methamphetamine, Cocaine
-
Hallucinogens: Cause sensory distortions.
- Examples: LSD, Cannabis
Substance Use Disorders (DSM-5 Criteria)
- Characterized by two or more of these criteria:
- Hazardous use
- Social/interpersonal issues related to use
- Neglecting major responsibilities
- Tolerance
- Withdrawal
- Using more than intended or for longer periods
- Repeated attempts to quit or control use
- Reduced social, recreational, or occupational involvement
- Significant time spent obtaining the substance
- Physical or psychological problems due to use
- Cravings
Physical Dependence: Tolerance
- Tolerance occurs when repeated drug use reduces the drug's effects.
- This involves:
- Reduced receptor numbers
- Reduced receptor binding efficiency
- Decreased receptor responsiveness
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Description
This quiz explores the actions and effects of various psychoactive drugs, including depressants, stimulants, opiates, and hallucinogens. Additionally, it covers the DSM-5 criteria for substance use disorders, highlighting their impact on behavior and health. Test your knowledge on drug classifications and their influence on the brain.
