<prompt> During laryngoscopy and endo-tracheal intubation which of the maneuver is not performedFlexion of the neckExtension of Head at the atlanto-occipital jointThe laryngoscope is lifted upwards levering over the upper incisorsIn a straight blade laryngoscope, the epiglottis is lifted by the tip  <response>: Upper incisor teeth have to be protected by a guard and the leverage of teeth should be avoided.Loose, filled or capped teeth, especially upper incisors, may be protected by a guard. Lee 