Which of the following is not included in hypopharynx?: (A) Pyriform fossa, (B) Post cricoid region, (C) Anterior pharyngeal wall, (D) Posterior pharyngeal wall
Answer is C. (c) Anterior pharyngeal wall(Ref. Scott Brown, Vol 3; 743)Anterior pharyngeal wall is no entity. Anterior to the hypopharynx is the larynx. Anterior to the nasopharynx and oropharynx are nasal and oral cavities respectively.