<prompt> True about non-depolarizing muscle relaxants a Competitive inhibitor of acetylcholineb Metabolised by pseudocholinesterasec Mg2 predisposes the blockd Ca2 antagonizes the blocke Hypothermia prolongs the blockbceacdeabcdabde  <response>: Non-depolarizing blockers act as competitive antagonists of Ach on Nm receptor at myoneural junction.Magnesium and hypothermia potentiate the block whereas calcium antagonizes the block. 