Mastering Postsynaptic Receptors & Drug Interactions
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Questions and Answers

Which drug mentioned in the text has a high affinity for opioid receptors and can effectively block the effects of opioids like heroin or fentanyl?

  • Fentanyl
  • Heroin
  • Narcan
  • Naloxone (correct)
  • What can happen when certain medications abruptly block the effects of opioids?

  • Immediate relief from pain
  • Increased tolerance to opioids
  • Decreased affinity for opioid receptors
  • Immediate withdrawal symptoms (correct)
  • What makes mechanisms six and seven powerful according to the text?

  • They require neurotransmitters
  • They have no significant effects at the receptor level
  • They involve drugs stimulating postsynaptic receptors (correct)
  • They involve drugs blocking presynaptic receptors
  • Which type of effect occurs when a drug competes with the neurotransmitter for the same binding site?

    <p>Direct effect</p> Signup and view all the answers

    What does affinity refer to in the context of receptors?

    <p>The strength with which a chemical binds to a specific receptor site</p> Signup and view all the answers

    Which mechanism involves drugs stimulating or blocking postsynaptic receptors without the need for neurotransmitters?

    <p>Mechanism seven</p> Signup and view all the answers

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