THE SKULL AND THE BONES OF THE SKULL 



75 



Longitudinal sulcus 

 Sulcus sagittalis j 



Internal table 



Lamina interna 



Parietal border 



Margo parietalis 



External angular process 

 Processus zygomaticus 



V / 



Sphenoidal border 



Margo sphenoidahs / 



Orbital plate , 



Pars orbitalis Foramen caacum' 

 Foramen csecum 



Frontal squama 



Posterior or cerebral 

 surface 



Frontal crest 

 Crista frontalis 



*Impressiones digitatae 1 



Nasal spiue External orifice of the frontal sinus 



Spina frontalis Apertura sinus frontalis 



1 Ridges (juga cerebralia) and sulci (impressiones digitals) corresponding respectively to the sulci and 

 convolutions of the superjacent portion of the frontal lobes of the cerebrum. TR. 



PIG. 152. THE FRONTAL BONE SEEN FROM BEHIND. INTERNAL SURFACE: FACIES CEREBRALIS. 



Os frontale Frontal bone. 



10 7. 



