Which of the following describes the primary mechanism of action of Atropine?
Show answer and explanation
Correct answer: Competitive antagonism of muscarinic receptors
Atropine is a competitive antagonist that binds to muscarinic receptors, preventing acetylcholine from binding. This action blocks parasympathetic postganglionic impulses, leading to effects like tachycardia and decreased secretions.
Keep practicing
More Cholinergic Antagonists questions
- A patient is administered Scopolamine via a transdermal patch for motion sickness. What is the primary site of action for this clinical eff…
- Which cholinergic antagonist is used via inhalation to produce bronchodilation in patients with COPD while minimizing systemic side effects?
- Which of the following is a classic symptom of 'Atropine toxicity' often summarized by common mnemonics?
- Oxybutynin is frequently prescribed for overactive bladder. By which mechanism does it alleviate symptoms?
- Which medication is a selective M1 receptor antagonist once used to treat peptic ulcers by reducing gastric acid secretion?
- In the cardiovascular system, what is the effect of high-dose Atropine on the heart rate?