18 Questions
What is clonidine primarily used for?
Treatment of hypertension
Which side effect is commonly associated with both clonidine and methyldopa?
Constipation
What is the main purpose of using Albuterol and terbutaline?
Management of acute asthma symptoms
Which side effect is common to both Albuterol and terbutaline when administered orally?
Arrhythmia
What do indirect-acting adrenergic agonists do?
Inhibit the reuptake of epinephrine or norepinephrine
What is a common misconception about amphetamine according to the text?
Its only action is central stimulatory
What term is used to describe adrenergic drugs that activate adrenergic receptors?
Sympathomimetics
Which neurotransmitter is primarily released by adrenergic neurons?
Norepinephrine
What type of drugs block the activation of adrenergic receptors?
Sympatholytics
Which direct-acting adrenergic agonist interacts with both α and β receptors?
Epinephrine
At low doses, what effects predominate in the vascular system due to epinephrine?
Vasodilation
What effect does epinephrine have on the contractility of the myocardium?
Strengthens
Which effect does cocaine have on the blood pressure?
Increases blood pressure by α1 agonist action on the vasculature
Why does norepinephrine accumulate in the synaptic space with cocaine use?
Due to blocking of norepinephrine reuptake transporters
How do α adrenergic blocking agents affect blood pressure?
Decrease peripheral vascular resistance
Which of the following is true about Tamsulosin's effect on blood pressure?
It has the least effect on blood pressure due to its selectivity for α1A receptors in the prostate and bladder
How do catecholamines produce magnified effects with cocaine use?
By enhancing sympathetic activity due to norepinephrine accumulation in the synaptic space
What is the primary difference between prazosin, doxazosin, and tamsulosin in terms of their selectivity?
Prazosin and doxazosin are more selective for α1B receptors, while tamsulosin is more selective for α1A receptors
Test your knowledge on drugs affecting the nervous system, including adrenergic agonists, adrenergic antagonists, cholinergic agonists, cholinergic antagonists, antiparkinsonian drugs, muscle relaxants, and general and local anesthetic agents.
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