<prompt> True regarding nasopharynx are all exceptAlso called as epipharynxLateral wall has pharyngeal opening of Eustachian tubeFossa of rosenmuller corresponds to the internal carotid aeryPassavants muscle is formed by Stylopharyngeus  <response>: PASSAVANTS RIDGE It is a mucosal ridge raised by fibres of palatopharyngeus. It encircles the posterior and lateral walls of nasopharyngeal isthmus. Soft palate, during its contraction, makes firm contact with this ridge to cut off nasopharynx from the oropharynx during the deglutition or speech. Ref:- Dhingra; pg num:-240 