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A relatively pure alfa agonist causes all of the following effects EXCEPT:
Increase peripheral arterial resistance Increase venous return Has no effect on blood vessels Reflex bradycardia
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A nonselective beta receptor agonist causes all of the following effects EXCEPT:
Increase cardiac output Increase peripheral arterial resistance Decrease peripheral arterial resistance Decrease the mean pressure
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All of the following agents are beta receptor agonists EXCEPT:
Epinephrine Isoproterenol Methoxamine Dobutamine
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Which of the following drugs causes bronchodilation without significant cardiac stimulation?
Isoprenaline Terbutaline Xylometazoline Methoxamine
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Beta1 receptor stimulation includes all of the following effects EXCEPT:
Increase in contractility Bronchodilation Tachycardia Increase in conduction velocity in the atrioventricular node
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Beta2 receptor stimulation includes all of the following effects EXCEPT:
Stimulation of renin secretion Fall of potassium concentration in plasma Relaxation of bladder, uterus Tachycardia
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Hyperglycemia induced by epinephrine is due to:
Gluconeogenesis (beta2) Inhibition of insulin secretion (alfa) Stimulation of glycogenolysis (beta2) All of the above
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Which of the following effects is associated with beta3-receptor stimulation?
Lipolysis Decrease in platelet aggregation Bronchodilation Tachycardia
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Which of the following statements is not correct?
Epinephrine acts on both alfa- and beta-receptors Norepinephrine has a predominantly beta action Methoxamine has a predominantly alfa action Isoprenaline has a predominantly beta action
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Indicate the drug, which is a direct-acting both alfa- and beta-receptor agonist:
Norepinephrine Methoxamine Isoproterenol Ephedrine
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Which of the following agents is an alfa1 alfa2 beta1 beta2 receptor agonist?
Methoxamine Albuterol Epinephrine Norepinephrine
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Indicate the direct-acting sympathomimetic, which is an alfa1 alfa2 beta1 receptor agonist:
Isoproterenol Ephedrine Dobutamine Norepinephrine
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Which of the following agents is an alfa1-selective agonist?
Norepinephrine Methoxamine Ritodrine Ephedrine
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Indicate the alfa2-selective agonist:
Xylometazoline Epinephrine Dobutamine Methoxamine
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Which of the following agents is a nonselective beta receptor agonist?
Norepinephrine Terbutaline Isoproterenol Dobutamine
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Indicate the beta1-selective agonist:
Isoproterenol Dobutamine Metaproterenol Epinephrine
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Which of the following sympathomimetics is a beta2-selective agonist?
Terbutaline Xylometazoline Isoproterenol Dobutamine
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Indicate the indirect-acting sympathomimetic agent:
Epinephrine Phenylephrine Ephedrine Isoproterenol
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Epinephrine produces all of the following effects EXCEPT:
Positive inotropic and chronotropic actions on the heart (beta1 receptor) Increase peripheral resistance (alfa receptor) Predominance of alfa effects at low concentration Skeletal muscle blood vessel dilatation (beta2 receptor)
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Epinephrine produces all of the following effects EXCEPT:
Decrease in oxygen consumption Bronchodilation Hyperglycemia Mydriasis
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