WorksheetsSympathomimetic agents
Total questions: 15
Worksheet time: 8mins
Which of the following drugs is a sympathomimetic agent?
Salbutamol
Atenolol
Tyramine
Prazosin
Sympathomimetic agents (a) heart rate and blood pressure
Which of the following is not a common side effect of sympathomimetic agents?
Hypertension
Tachycardia
Bradycardia
Anxiety
Respiratory depression
Which of the following is a commonly used sympathomimetic agent in the treatment of anaphylaxis?
Epinephrine
Dopamine
Isoproterenol
Ephedrine
Which of the following is a potential side effect of using sympathomimetic agents for an extended period?
Hypotension
Bradycardia
Tolerance
Constipation
Which of the following is not a contraindication for using sympathomimetic agents?
Hypertension
Tachycardia
Diabetes
None of the listed
Sympathomimetic agents work by:
Blocking sympathetic nerve transmission
Stimulating sympathetic nerve transmission
Inhibiting parasympathetic nerve transmission
Stimulating parasympathetic nerve transmission
Which of the following are not metabolised by monoamine oxidase (MOA)?
Adrenaline
Isoprenaline
Noradrenaline
Dopamine
Which of the following is a drug is used to lower blood pressure during pregnancy?
Labetalol
Atenolol
Prazosin
Propranolol
1. Which enzyme is the rate-limiting step in the synthesis of noradrenaline?
A. Dopamine β-hydroxylase
B. Tyrosine hydroxylase
Phenylethanolamine N-methyltransferase
Monoamine oxidase
The negative feedback mechanism in noradrenaline release occurs via which receptor?
β1
β2
α2
α1
What is the function of the noradrenaline transporter (NET)?
Metabolizes noradrenaline
Transports noradrenaline into vesicles
Reuptakes noradrenaline into presynaptic neurons
Activates α receptors
Which enzyme inactivates noradrenaline in the synaptic cleft?
Monoamine oxidase A (MAO-A)
Monoamine oxidase A (MAO-B)
Catechol-O-methyltransferase (COMT)
Acetylcholinesterase
Which sympathomimetic has both direct and indirect mechanisms?
Ephedrine
Dopamine
Cocaine
Adrenaline
Which drug blocks the reuptake of noradrenaline without directly acting on adrenoceptors?
Phenylephrine
Cocaine
Isoproterenol
Ephedrine
