Anaesthesia What is mechanism of action of curonium drugs as muscle relaxant? A Persistently depolarizing at neuromuscular junction B Act competitively on Ach receptors blocking postsynaptically C Repetitive stimulation of Ach receptors on muscle end plate D Inhibiting the calcium channels on presynaptic membrane 💡 Explanation What is mechanism of action of curonium drugs as muscle relaxant? ✓ Correct Answer: B. Act competitively on Ach receptors blocking postsynaptically