112 



PR A CTICAL ANA TO MY. 



superior maxilla, the lachrymal, ethmoid, inner surface of superior maxilla, in- 

 ferior turbinated, vertical plate of palate bones, and inner surface of pterygoid 



PTERYGO-PALATINE CANALS 



VIOIAN CANAL 



PTERYGOIO FOSSA 

 EXTERNAL PTERYGOID PLATE 



TUBEROSITY OF PALATE BONE 



FORAMEN OVALE 



INTERNAL PTERYGOiD PLATE 



HAMULAR PROCESS 



SPINE OF PALATE OR POSTERIOR 

 NASAL SPINE 



FIG. 73. THE POSTERIOR NARES. 



NASAL BONE Frontal sinus 



Sphenoidal sinus 



UPPER LATERAL CARTILAGE 



Groove between septa! 

 and upper lateral 

 cartilage 





LOWER LATERAL 



THICKENED BORDER OF CARTILAGE RESTING i \ Pouch at uprer 



UPON ANTERIOR NASAL SPINE Incisive papilla \ extremity of Sten- 



SEPTAL CARTILAGE 8on ' 8 canal 



ORIFICE OF EUSTACHiAN 



TUBE 

 SOFT PALATE 



FIG. 74. SECTION SHOWING BONY AND (.'AIM -11 .ACINOI s SKITCM. 

 The dotted line indicates the course of the anterior palatine canal. 



process of the sphenoid bone. This surface is covered by mucous membranr. 

 This must be studied on the dry skull. 



The anterior narcs is the inlet to the nose from the external world. The 



