I'l.Mi: 1\'.— Ti; \-N~\ I KSi; Section taki;.n immi i i ^ i i ■ ., i '. ins 



I. Frontal sinus. 2. Communication between frontal and superior maxillary sinuses. 

 3. Posterior nares. 4. Superior maxillary sinus. 5. Soft palate. 6. Isthmus of the fauces. 



