<prompt> Which among the following is not a part of Waldeyer ring:Lingual tonsilPalatine tonsilAdenoidsThyroid gland  <response>: Ans: d Thyroid gland Ref: Dhingra 4th ed p 223Scattered lymphatics in the subepithelial layer of pharynx forms masses at certain places, collectively termed as waldeyer ring.The masses are:1 Nasopharyngeal tonsil Adenoids2 Palatine tonsil3 Lingual tonsil4 Tubal tonsil in fossa of Rossen Muller5 Lateral pharyngeal band6 Nodules in posterior pharyngeal wall. 