<prompt> The plane of surgical anesthesia during ether anesthesia is defined asLoss of consciousnessLoss of consciousness to the onset of spontaneous respirationFrom onset of regular respiration to cessation of spontaneous breathingAbsence of reflexes  <response>: Refer KDT 7th373 The plane of surgical anesthesia during ether anesthesia is defined as from onset of regular respiration to cesssation of spontaneous breathing 