Lymphoid tissue called Waldeyer's ring is situated in:: (A) Nasopharynx, (B) Oropharynx, (C) Both nasopharynx and oropharynx, (D) Base of tongue
Answer is C. Waldeyer's ring consists of subepilhelial collection of lymphoid tissue. It comprises adenoid, tubal tonsil (both in nasopharynx) and palatine tonsils, lingual tonsils and granules in posterior pharyngeal wall (in oropharynx).