WorksheetsPharmacology Quiz
Total questions: 20
Worksheet time: 10mins
Amphetamine primarily acts by
Blocking dopamine receptors
Increasing release of catecholamines
Inhibiting MAO irreversibly
Blocking calcium channels
Major pharmacological action of amphetamine is
CNS depression
CNS stimulation
Muscle relaxation
Antipsychotic action
Therapeutic use of amphetamine includes
Parkinson disease
ADHD
Narcolepsy
Depression
Common adverse effect of amphetamine is
Sedation
Weight gain
Insomnia and anorexia
Bradycardia
Chronic amphetamine abuse may lead to
Parkinsonism
Schizophrenia-like psychosis
Alzheimer disease
Myasthenia gravis
Dopamine is preferred in acute renal failure because it
Decreases renal blood flow
Blocks aldosterone
Increases renal perfusion at low doses
Inhibits ADH
Low-dose dopamine acts mainly on
D1 receptors
α1 receptors
β1 receptors
β2 receptors
Selective alpha-1 blockers cause
Bronchoconstriction
Vasoconstriction
Vasodilation and fall in BP
Bradycardia
Example of selective α1 blocker is
Propranolol
Prazosin
Phenoxybenzamine
Clonidine
Major adverse effect of prazosin is
Reflex hypertension
First-dose postural hypotension
Tachyphylaxis
Bradycardia
Selective α1 blockers are useful in
Asthma
Hypertension and BPH
Arrhythmias
Heart failure
Tamsulosin acts mainly on
α1A receptors
α1B receptors
β1 receptors
β2 receptors
Primary therapeutic use of tamsulosin is
Hypertension
Bronchial asthma
Benign prostatic hyperplasia
Heart failure
Advantage of tamsulosin is
Severe hypotension
Minimal effect on blood pressure
Bradycardia
Central sedation
Cardioselective beta-blockers selectively block
β2 receptors
β1 receptors
α receptors
Dopamine receptors
Example of cardioselective beta-blocker is
Propranolol
Nadolol
Atenolol
Timolol
Cardioselective beta-blockers are preferred in patients with
Asthma
Diabetes and asthma
Peptic ulcer disease
Epilepsy
Beta-blocker with additional vasodilatory action is
Metoprolol
Atenolol
Nebivolol
Propranolol
Nebivolol causes vasodilation by
α blockade
β2 stimulation
NO release
Calcium channel blockade
Labetalol causes vasodilation due to blockade of
β1 receptors only
β2 receptors only
α1 receptors
Muscarinic receptors
