Pharmacology: Drugs Affecting the Nervous System Quiz
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Questions and Answers

What is clonidine primarily used for?

  • Treatment of opiate withdrawal symptoms
  • Treatment of acute asthma symptoms
  • Management of premature labor
  • Treatment of hypertension (correct)

    • Which side effect is commonly associated with both clonidine and methyldopa?

  • Tremor
  • Arrhythmia
  • Constipation (correct)
  • Restlessness

    • What is the main purpose of using Albuterol and terbutaline?

  • Management of acute asthma symptoms (correct)
  • Treatment of hypertension
  • Treatment of opiate withdrawal symptoms
  • Uterine relaxation

    • Which side effect is common to both Albuterol and terbutaline when administered orally?

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

    What do indirect-acting adrenergic agonists do?

    <p>Inhibit the reuptake of epinephrine or norepinephrine</p> Signup and view all the answers

    What is a common misconception about amphetamine according to the text?

    <p>Its only action is central stimulatory</p> Signup and view all the answers

    What term is used to describe adrenergic drugs that activate adrenergic receptors?

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

    Which neurotransmitter is primarily released by adrenergic neurons?

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

    What type of drugs block the activation of adrenergic receptors?

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

    Which direct-acting adrenergic agonist interacts with both α and β receptors?

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

    At low doses, what effects predominate in the vascular system due to epinephrine?

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

    What effect does epinephrine have on the contractility of the myocardium?

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

    Which effect does cocaine have on the blood pressure?

    <p>Increases blood pressure by α1 agonist action on the vasculature</p> Signup and view all the answers

    Why does norepinephrine accumulate in the synaptic space with cocaine use?

    <p>Due to blocking of norepinephrine reuptake transporters</p> Signup and view all the answers

    How do α adrenergic blocking agents affect blood pressure?

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

    Which of the following is true about Tamsulosin's effect on blood pressure?

    <p>It has the least effect on blood pressure due to its selectivity for α1A receptors in the prostate and bladder</p> Signup and view all the answers

    How do catecholamines produce magnified effects with cocaine use?

    <p>By enhancing sympathetic activity due to norepinephrine accumulation in the synaptic space</p> Signup and view all the answers

    What is the primary difference between prazosin, doxazosin, and tamsulosin in terms of their selectivity?

    <p>Prazosin and doxazosin are more selective for α1B receptors, while tamsulosin is more selective for α1A receptors</p> Signup and view all the answers

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