<prompt> Dehiscence in the external auditory canal cause infection in the parotid gland via:Fissure of SantoriniNotch of RivinusPetro-tympanic fissureRetro pharyngeal fissure  <response>: a Fissure of SantoriniRef. Cummings, 6th ed., 1981The notch of Rivinus is the upper attachment of pars flaccida.Petro-tympanic fissure is present on the anterior wall of middle ear, on which attaches the anterior malleolar ligament.Retropharyngeal fissure does not exist. 