Atropine is useful in organophosphate poisoning because it: (A) Reactivates Acetylcholineesterase, (B) Competes with acetyl chloline release, (C) Binds with both nicotinic and muscarinic acetylcholine receptors, (D) Is a competitive antagonist of acetylcholine
Answer is D. Atropine acts as an antagonist at muscarinic receptors. It has no activity on nicotinic receptor and do not interfere with the release of ACh Ref-KDT 6/e p106