This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
Suxamethonium is: 
Select and explain. 
A. Non depolarizing muscle relaxant, B. Depolarising muscle relaxant, C. Direct acting muscle relaxant, D. All of the above
B: Depolarising muscle relaxant
Answer: B: Depolarising muscle relaxant 
Explanation: Suxamethonium is Succinyl choline that is a depolarising blocker. Suxamethonium chloride, also known assuxamethonium or succinylcholine, is a medication used to cause sho-term paralysis as pa of general anesthesia. This is done to help with tracheal intubation or electroconvulsive therapy. It is given either by injection into a vein or muscle. From KD Tripati 7th edition Page no 345