THE SINUS MAXILLARIS 



123 



S.SpK. 



Toix.pHa-r. 



C.med. 



C.irtf, 



FIG. 46. SPECIMEN FIFTEEN YEARS, NINE MONTHS, AND TWENTY-SIX DAYS 



OLD. (Series D, No. 76.) 



Lateral view of this specimen is shown in Fig. 45. Sagittal section, showing 

 the sinus sphenoidalis and a portion of the lateral nasal wall. There was in 

 this case a marked deviation of the septum nasi toward the left, and a com- 

 pensatory increase in the size of the concha media. Note the presence of the 

 cellulse conchales. The anterior conchal cell has its origin as an extension 

 from a posterior ethmoidal cell, just anterior to the superior meatus, while the 

 posterior conchal cell developed from the posterior portion of the suprabullar 

 furrow. 1, Probe through ostium of the anterior conchal cell; 2, probe 

 through ostium of the posterior conchal cell; C.sup., concha superior; C.supr.I, 

 concha suprema I; S.sph., sinus sphenoidalis; Ton.phar., tonsilla pharyngea; 

 C.med., concha media; C. inf., concha inferior; C el. conchales, cellulse conchales. 



