True regarding nasopharynx are all except
High-Yield Explanation
PASSAVANT'S 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