<prompt> Lowest concentration of anaesthetic agent in alveoli needed to produce immobility in response to painful stimulus in 50 of individual is termed asMinimum alveolar concentrationMinimal analgesic concentrationMinimal anaesthetic concentrationMaximum alveolar concentration  <response>: MAC is the lowest concentration of the anaesthetic in pulmonary alveoli needed to produce immobility in response to a painful stimulus surgical incision in 50 individuals. 