Direct-Acting Cholinergic Drugs Quiz

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Questions and Answers

Which of the following limits the therapeutic usefulness of Acetylcholine (ACh)?

  • High affinity for all types of cholinoceptors
  • Inhibition of AChE prolongs activation of cholinoceptors by ACh
  • Lack of selectivity for all types of cholinoceptors
  • Rapid degradation by cholinesterases (correct)

What is the primary reason for the limited therapeutic usefulness of Acetylcholine (ACh)?

  • Rapid degradation by cholinesterases (correct)
  • Slow degradation by cholinesterases
  • Low affinity for all types of cholinoceptors
  • High selectivity for all types of cholinoceptors

What effect does the inhibition of AChE have on the activation of cholinoceptors by ACh?

  • Has no impact on activation of cholinoceptors by ACh
  • Prolongs activation of cholinoceptors by ACh (correct)
  • Reduces activation of cholinoceptors by ACh
  • Terminates activation of cholinoceptors by ACh

What is the primary reason for the limited therapeutic usefulness of Acetylcholine (ACh)?

<p>Its rapid degradation by cholinesterases (B)</p> Signup and view all the answers

What is the impact of inhibiting AChE on the activation of cholinoceptors by ACh?

<p>Prolongs the activation of cholinoceptors by ACh (A)</p> Signup and view all the answers

Why is the therapeutic usefulness of Acetylcholine (ACh) limited?

<p>It lacks selectivity for all types of cholinoceptors (C)</p> Signup and view all the answers

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