Neuromuscular Junction and Curare Quiz
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Questions and Answers

What effect does pancuronium have on the body?

  • Anticholinergic effect
  • Partial blockade of ganglia and adrenal medulla (correct)
  • Hypotension and bradycardia
  • Stimulation of the CNS
  • What is the duration of action of succinylcholine?

  • 5 minutes (correct)
  • 10 minutes
  • 15 minutes
  • 20 minutes
  • Which type of neuromuscular blocker is Curare?

  • Competitive blocker (correct)
  • Reversal blocker
  • Non-competitive blocker
  • Depolarizing blocker
  • What is the clinical use of competitive neuromuscular blockers?

    <p>Facilitating surgical manipulation</p> Signup and view all the answers

    Competitive antagonism can only occur through reversible binding of the antagonist to the receptor site

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

    Atropine competes with acetylcholine at muscarinic receptors, decreasing the stimulatory effect of acetylcholine on gastrointestinal motility

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

    Hexamethonium prevents the effect of acetylcholine on nicotinic receptors in autonomic ganglia by binding to the ligand binding domain

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

    Irreversible competitive antagonism occurs when the antagonist forms a strong bond with the receptor that dissociates very slowly or not at all

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

    Functional antagonism occurs when the antagonist reduces the physiological response of the agonist by inducing the opposite response at the same receptor site

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

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