Atropine is useful in organophosphate poisoning because it -: (A) Reactivates acetylcholinesterase, (B) Competes with acetylcholine release, (C) Binds with both nicotinic and muscarinic acetylcholine receptors, (D) Is a competitive antagonist of acetylcholine
Answer is D. Ans. is 'd' i.e., Is a competitive antagonist of acetylcholine o Atropine acts as competitive antagonist at muscarinic receptors. It has no activity on nicotinic receptors and has nothing to do with Ach release.