30 



THE AXIAL SKELETON 



Sacral portion of the brim 



of the pelvis 



Pars sacralis lineae ter- 

 minalis 



Transverse ridges 

 Lineae transversae 



Superior articular process 



Processus articularis superior 



Lateral mass 



Pars lateralis 



-...Anterior sacral foramina 

 "Foramina sacralia anteriora 



Apex of the sacrum 

 Apex ->ssis sacri 



FIG. 56. MALE SACRUM (FACIES PELVINA PELVIC SURFACE). SEEN FROM BEFORE. 



Sacral portion of the brim - 



of the pelvis 



Pars sacralis lineae ter- 

 minalis 



Superior articular process 

 Processus articularis superior 



, Lateral mass 

 Pars lateralis 



Transverse ridges 

 "'Lineae transversae 



Anterior sacral foramina 



Foramina sacralia anteriora 



Apex of the sacrum 

 Apex ossis sacri 



FIG. 57. FEMALE SACRUM (FACIES PELVINA PELVIC SURFACE). SEEN FROM BEFORE. 



Os sacrum The sacrum. 



