A. Hard palate is formed by maxilla, palatine and vomer bone.
B. Levator palatine forms a delicated tendon which winds round the pterygoid hamulus and flattens out to form the palatine aponeurosis
C. All the constrictors of pharynx are inserted into median raphae on the posterior wall of the pharynx.
D. The posterior wall of pharynx, the upper part of thyropharyngeus is a multiple sheet of muscle and is overlapped by the upper and middle constrictors.