Plica triangularis is present in: (A) Antero-inferior pa of tonsil, (B) Dorsum of tongue, (C) Inlet of larynx, (D) None
Answer is A. The plica triangularis is a triangular vestigeal fold of mucous membrane covering the anteroinferior pa of the tonsil. The plica semilunaris, is a similar semilunar fold that may cross the upper pa of the tonsillar sinus. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 4th edition.