Psychopharmacology Overview
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Questions and Answers

Which class includes medications with the highest potential for abuse but still has medical value?

  • Class 3
  • Class 1
  • Class 4
  • Class 2 (correct)
  • Which of the following medications is classified under Class 3?

  • Oxycodone
  • Hydrocodone
  • Diazepam (correct)
  • Street drugs
  • Why are drug classifications subject to change?

  • To categorize all medications under a single schedule
  • To ensure all medications maintain their medicinal value
  • Based on new observational data and usage patterns (correct)
  • To make sure all medications are accessible without prescription
  • What type of medications are categorized as non-scheduled?

    <p>Medications for treating diabetes and heart disease</p> Signup and view all the answers

    Which of the following statements is correct regarding Class 1 drugs?

    <p>They are considered street drugs with no medicinal value.</p> Signup and view all the answers

    What does psychopharmacology primarily investigate?

    <p>Drug effects on mood, perception, cognition, and behavior</p> Signup and view all the answers

    Which of the following is NOT considered a drug?

    <p>Vitamins taken regularly</p> Signup and view all the answers

    What is the main reason for recreational drug use?

    <p>To experience specific drug effects</p> Signup and view all the answers

    What are the brand names of drugs known for?

    <p>Being trademarked names given by the companies</p> Signup and view all the answers

    What does pharmacokinetics study?

    <p>How drugs are distributed, metabolized, and eliminated</p> Signup and view all the answers

    Which aspect of objective effects is true?

    <p>They can be directly observed by others</p> Signup and view all the answers

    What purpose does pharmacogenetics serve in pharmacology?

    <p>To investigate how genetic differences influence drug response</p> Signup and view all the answers

    What might the prevalence of drug use indicate in psychology?

    <p>A need for better therapeutic drug development</p> Signup and view all the answers

    Which medication listed is commonly associated with potential future scheduling due to abuse?

    <p>Dextromethorphan</p> Signup and view all the answers

    What structure in a neuron helps to conduct electrical signals more quickly down the axon?

    <p>Myelin sheath</p> Signup and view all the answers

    Which part of the neuron is responsible for receiving information?

    <p>Dendrites</p> Signup and view all the answers

    What component of the cell membrane helps to shield the oily layer from water?

    <p>Phospholipids</p> Signup and view all the answers

    Which statement describes the lock and key principle in the context of proteins?

    <p>Only specific proteins can interact with specific receptors.</p> Signup and view all the answers

    What type of information do sensory nerves primarily carry?

    <p>Sensory information to the brain</p> Signup and view all the answers

    Which of the following terms refers to molecules that do not mix with water?

    <p>Hydrophobic</p> Signup and view all the answers

    What differentiates lipophilic molecules from lipophobic molecules?

    <p>Lipophilic dissolve in oil, while lipophobic do not.</p> Signup and view all the answers

    What is the primary function of proteins found in cell membranes?

    <p>To facilitate communication and transfer of signals</p> Signup and view all the answers

    Which of the following terms indicates a molecule that is both water loving and fat hating?

    <p>Hydrophilic</p> Signup and view all the answers

    Study Notes

    Psychopharmacology Overview

    • Studies the effects of drugs on mood, perception, cognition, and behavior.
    • Important for understanding human behavior and therapeutic drug development.
    • Examines prevalence of drug use.

    Definition of a Drug

    • A drug is an administered substance that affects physiological functioning.
    • Forms of drugs vary; substances like food and vitamins are not classified as drugs unless administered exogenously.
    • Hormones like testosterone are not considered drugs unless introduced externally.

    Reasons for Drug Use

    • Instrumental use serves specific therapeutic purposes (e.g., coffee for alertness, pain medication for relief).
    • Recreational use aims solely to experience the drug's effects, which can lead to dependence (e.g., alcohol for intoxication, LSD for altered perception).

    Drug Naming Conventions

    • Trade names: Trademarked name assigned by the manufacturing company.
    • Generic names: Nonproprietary classifications that distinguish drugs within a category.
    • Chemical names: Provide specific chemical identity of the drug.
    • Street names: Common alternative names used in informal contexts.

    Drug Effects

    • Objective effects: Observable effects that can be seen by others.
    • Subjective effects: Personal experiences that cannot be externally observed.

    Aspects of Pharmacology

    • Pharmacodynamics: Studies the physiological actions of drugs.
    • Pharmacokinetics: Examines drug distribution, metabolism, and elimination in the body.
    • Pharmacogenetics: Investigates how genetic variations affect drug responses.

    Drug Classification

    • Scheduled medications: Classified based on potential for addiction.

      • Class 1: High addiction potential, no medical uses (e.g., street drugs).
      • Class 2: High abuse potential with valid medical applications (e.g., oxycodone).
      • Classes 3, 4, 5: Gradually lesser potential for abuse (e.g., sleep medications).
    • Non-scheduled medications: Generally lower abuse potential, includes medications for chronic diseases (e.g., diabetes, heart, and thyroid conditions).

    Classification Dynamics

    • Drug classifications are not static; the FDA can reclassify drugs based on new data.
    • Example: Carisoprodol reclassified from non-scheduled to scheduled in 2012; hydrocodone changed from schedule 3 to schedule 2 in 2014.

    Future Classification Considerations

    • Current non-scheduled medications may be reconsidered for scheduling due to patterns of abuse (e.g., dextromethorphan, gabapentin).

    Basic Neuron Structure

    • Neurons consist of a cell body (soma), dendrites, axons, and axon terminals.
    • Myelin sheaths enhance signal conduction speed along axons.

    Nerve Structure

    • Nerves are organized bundles of axons, which can transmit sensory information to the brain or carry motor commands from the brain.

    Cell Membranes

    • Composed of phospholipid bilayers; fatty lipids clump to minimize contact with water, forming cell walls.
    • Membranes contain receptors and channels that are crucial for drug action.

    Proteins in Membranes

    • Receptors and channels are protein structures made from amino acid chains, critical for drug interaction (based on the lock-and-key principle).

    Important Terms

    • Hydrophilic: Water-loving.
    • Hydrophobic: Water-hating.
    • Lipophilic: Fat-loving.
    • Lipophobic: Fat-hating.
    • Interactions between these properties dictate drug behavior in biological systems.

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    Description

    This quiz explores the critical aspects of psychopharmacology, including the effects of drugs on mood, perception, cognition, and behavior. Understand the importance of this field in relation to drug use prevalence and therapeutic drug development.

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