Pharmacology: Drugs Affecting the Nervous System Quiz

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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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