<prompt> Shoest acting skeletal muscle relaxant isSuxamethoniumMivacuriumPancuroniumVecuronium  <response>: Suxamethonium succinylcholine is the shoest acting skeletal muscle relaxantMivacurium is the shoest acting nondepolarizing skeletal muscle relaxant.Refer: Morgan and Mikhails Clinical Anaesthesiology, 5th edition, pg no.205-211 