58 



THE SKELETON 



fontanelle. The sphenoidal or anterior inferior angle is thin and prolonged 

 do\Ynward to articulate with the tip of the great wing of the sphenoid. Its inner 

 surface is marked hy a deep groove, sometimes converted into a canal for a short 



Fig. 72. — The Left Parietal. (Outer surface.) 



Sagittal border Parietal foramen 



p^vETAU EMINENCE 



Portion covered by— ^ , 

 aponeurosis of <^ ^ j|i 

 occipito-frontalis "^ 



Superior temporal line 



Inferior temporal line 





For temporal muscle 

 and forms part o 

 the temporal fossa 



Sphenoidal angle 



'Si W— 



Fig. 73. — The Left Parietal. (Inner surface.) 

 Parietal foramen Groove for superior sagittal sinus Depressions for Pacchionian bodies 



Groove for transverse sinus Grooves for middle meningeal artery 



di.stance, for the middle meningeal vessels (chiefly for the sinus). The occipital 

 or posterior superior angle is obtuse and occupies that part whicii during foetal 

 life cntcr.s into f(jrination of the posterior fontanelle. The mastoid or posterior 



