No anesthesiologist who supervises a licensed anesthesiologist assistant in accordance with and within the terms of any permission granted by the commission is considered as aiding and abetting an unlicensed person to practice medicine. The supervising anesthesiologist and anesthesiologist assistant shall retain professional and personal responsibility for any act which constitutes the practice of medicine as defined in RCW 18.71.011 when performed by the anesthesiologist assistant.