<prompt> Which of the following structures is seen in oropharynx?Pharyngotympanic tubeFossa of RosenmullerPalatine tonsilPyriform fossa  <response>: c Palatine tonsilRef. Scott Brown, Vol 3; 739Palatine tonsil lies in the lateral wall of oropharynx.Pharyngotympanic tube or Eustachian tube and Fossa of Rosenmuller is present in the lateral wall of nasopharynx.Pyriform fossa is a component of the hypo- or laryngopharynx. 