D-tubocurarine acts by: (A) Inhibiting nicotinic receptors at myoneural junction, (B) Inhibiting nicotinic receptors at autonomic ganglion, (C) Producing depolarizing block, (D) By inhibiting reuptake of acetylcholine
Answer is A. All non-depolarising blockers (D-Tubocurare) acts as a competitive antagonist of acetylcholine on nicotine (Nm) receptors at myoneural junction .