<prompt> Appropriate size of oropharyngeal airways is measured from ?Incisor teeth to tragus of the earCorner of mouth to angle of mandibleTip of nose to angle of mandibleAla of nose to angle of mandible  <response>: Oropharyngeal airway Guedel oropharyngeal airway used to lift the tongue above oropharynx Take either from the midpoint of the incisor or corner of the lip to angle of the mandible Used in unconscious person; as laryngospasm can occur in conscious person by its use 