Adrenergic Agonist Agents and Receptors
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Questions and Answers

Which of the following beta-2 agonists is also used to delay labor in premature birth?

  • Pirbuterol
  • Metaproterenol
  • Terbutaline (correct)
  • Salmeterol
  • What is the primary mechanism of action of amphetamines?

  • Blockade of beta-2 receptors
  • Release of norepinephrine from presynaptic terminals (correct)
  • Activation of alpha-1 receptors
  • Inhibition of norepinephrine reuptake
  • Which of the following is a mixed-action adrenergic agent?

  • Metaproterenol
  • Cocaine
  • Ephedrine (correct)
  • Salmeterol
  • What is a common side effect of adrenergic agonists?

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

    Which of the following is a local anesthetic that blocks the Na+/K+ pump required for reuptake of norepinephrine?

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

    What is Metaraminol used for?

    <p>Treatment of shock</p> Signup and view all the answers

    What is the primary receptor through which epinephrine acts at low doses?

    <p>Beta 1 receptors</p> Signup and view all the answers

    Which of the following is a therapeutic use of norepinephrine?

    <p>Acute hypotension</p> Signup and view all the answers

    What is the primary effect of dopamine on the cardiovascular system?

    <p>Increased chronotropic effect</p> Signup and view all the answers

    Which of the following receptors is responsible for the vasodilation effect of epinephrine?

    <p>Beta 2 receptors</p> Signup and view all the answers

    What is the effect of epinephrine on the respiratory system?

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

    Which of the following is a side effect of epinephrine?

    <p>All of the above</p> Signup and view all the answers

    What is the primary receptor through which dopamine acts?

    <p>D1 and A1 receptors</p> Signup and view all the answers

    Which of the following is a therapeutic use of dobutamine?

    <p>Congestive heart failure</p> Signup and view all the answers

    What is the effect of norepinephrine on peripheral resistance?

    <p>Increased peripheral resistance</p> Signup and view all the answers

    Which of the following is a characteristic of epinephrine's pharmacokinetics?

    <p>Rapid onset but brief duration</p> Signup and view all the answers

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