<prompt> Shoest acting non depolarizing muscle relaxant isMivacuriumDoxacuroniumPipecuriumVecuronium  <response>: Suxamethonium succinylcholine is the shoest acting skeletal muscle relaxantMivacurium is the shoest acting nondepolarizing skeletal muscle relaxant.Refer: stoeltings pharmacology and physiology in anaesthetic practice, 5th edition, pg no.139 