<prompt> Murphys eye is pa of which of the following devise:-Endotracheal tubeLaryngeal mask airwayAnesthesia face maskMapleson circuit  <response>: It is the pa of Endotracheal tube just distal to proximal opening. Size of ETT Adult Male : 8mm ID-9mm ID Adult Female :7mm ID-8mm ID Pediatric 6yrs Age4 4.5mm ID 6yrs Age3 3.5mm ID 