Pharmacological Actions of a Cholinergic Agent
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Questions and Answers

What is the mechanism of action of clonidine?

  • Stimulates presynaptic alpha 2 receptors (correct)
  • Stimulates presynaptic alpha 1 receptors
  • Blocks postsynaptic alpha 1 receptors
  • Blocks postsynaptic alpha 2 receptors

    • What is the effect of alpha adrenergic blockers on blood pressure?

  • Increase in mean arterial blood pressure
  • Increase in systolic blood pressure
  • Decrease in mean arterial blood pressure (correct)
  • Decrease in diastolic blood pressure

    • Which of the following is an indication for beta adrenergic blockers?

  • Bronchial asthma
  • Gangrene
  • Hypotension
  • Hypertension (correct)

    • What is the effect of beta adrenergic blockers on heart rate?

    <p>Decrease in heart rate</p> Signup and view all the answers

    What is the mechanism of action of alpha methyldopa?

    <p>Displaces norepinephrine</p> Signup and view all the answers

    What is the effect of alpha adrenergic blockers on skeletal muscles?

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

    Which of the following is a selective alpha 1 blocker?

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

    What is the effect of beta adrenergic blockers on bronchial smooth muscle?

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

    Which of the following is an indication for alpha adrenergic blockers?

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

    What is the effect of alpha adrenergic blockers on genital blood vessels?

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

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