Pharmacology: Alpha Receptors Agonists and Antagonists
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Questions and Answers

What is the primary neurotransmitter involved in the sympathetic nervous system?

  • GABA
  • Acetylcholine
  • Muscarine
  • Norepinephrine (NE) (correct)

What is the function of the parasympathetic nervous system?

  • Voluntary action
  • Rest and digest state (correct)
  • Fight or flight response
  • Involuntary action

Which of the following is NOT a division of the autonomic nervous system?

  • Parasympathetic nervous system
  • Enteric neurons
  • Sympathetic nervous system
  • Somatic system (correct)

What is the primary function of alpha receptor agonists?

<p>To stimulate the sympathetic nervous system (C)</p> Signup and view all the answers

What are the potential side effects of alpha receptor agonists?

<p>Tachycardia and hypertension (B)</p> Signup and view all the answers

What is the clinical use of alpha receptor modulating agents?

<p>To treat hypertension and anxiety disorders (D)</p> Signup and view all the answers

What is the main use of midodrine?

<p>Postural hypotension (A)</p> Signup and view all the answers

Which of the following is a common adverse effect of alpha agonists?

<p>Hypertension (B)</p> Signup and view all the answers

What is the therapeutic use of phenylephrine in PSVT?

<p>To increase blood pressure (A)</p> Signup and view all the answers

What is the pharmacological action of selective alpha blockers?

<p>Vasodilation (C)</p> Signup and view all the answers

What is the clinical application of oxymetazoline?

<p>Nasal decongestant (D)</p> Signup and view all the answers

What is the adrenergic action of methoxamine?

<p>Alpha 1 agonist (B)</p> Signup and view all the answers

What is the indication of epinephrine in bronchospasm?

<p>To relax bronchial muscles (A)</p> Signup and view all the answers

What is the mechanism of action of amphetamine?

<p>Enhances the release of norepinephrine (C)</p> Signup and view all the answers

What is the therapeutic use of pseudoephedrine?

<p>To treat nasal and sinus congestion (A)</p> Signup and view all the answers

What is the effect of phenylephrine on blood pressure?

<p>It increases blood pressure (C)</p> Signup and view all the answers

What is the use of phenylephrine in fundus examination?

<p>To dilate pupils (B)</p> Signup and view all the answers

What is the mechanism of action of tricyclic antidepressants (TCAs) in relation to norepinephrine?

<p>They block the reuptake of norepinephrine (D)</p> Signup and view all the answers

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