Receptor Types and Responses Quiz

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Questions and Answers

What is the primary effect of atropine on the detrusor muscle?

  • Causes mydriasis
  • Relaxes it
  • Decreases its tone (correct)
  • Increases its tone

Which drug is known for causing prolongation of QT interval at high doses among the listed antimuscarinic drugs?

  • Tolterodine
  • Solifenacin (correct)
  • Oxybutynin
  • Darifenacin

Which antimuscarinic drug has the greatest M3 selectivity among the listed options?

  • Oxybutynin
  • Tolterodine
  • Darifenacin (correct)
  • Fesoterodine

What is a common side effect of anticholinergic drugs that may affect vision?

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

Which drug, used for motion sickness, is classified as a muscarinic antagonist?

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

Why should anticholinergic drugs be used with caution in pregnant females according to the text?

<p>They decrease milk production (B)</p> Signup and view all the answers

Which receptor subtype is located in all autonomic nervous system ganglia and the adrenal medulla?

<p>Nicotinic n (A)</p> Signup and view all the answers

Where are Nicotinic m receptors primarily located?

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

Which subtype of cholinergic receptor is primarily located in the bladder detrusor and GI smooth muscle?

<p>M3 (D)</p> Signup and view all the answers

Beta 2 adrenergic receptors cause which of the following effects?

<p>Bronchial dilation (A)</p> Signup and view all the answers

Which drug is used for dry mouth treatment in Sjogren Syndrome by activating muscarinic receptors?

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

What do muscarinic antagonists selectively block the effects of at muscarinic receptors?

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

Which receptor activation leads to vasoconstriction and mydriasis?

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

What is the therapeutic use of alpha 2 blockade?

<p>Relief of severe pain (B)</p> Signup and view all the answers

Which condition is treated with alpha 1 blockade?

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

What are the adverse effects of beta 2 blockade?

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

In which condition does beta 1 activation enhance impulse conduction in the AV node?

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

What is the main therapeutic application of beta blockade?

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

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