THE DURA MATER 



909 



Fig. 715. — Showing the Spinal Dura Mater Exposed in situ. (Dorsal aspect.) (After 

 Toldt, "Atlas of Human Anatomy," Rebman, London and New York.) 

 Foramen magnum 



Vertebral artery 



Transverse process of atlas 



Continuation of dura mater upon the,.,^* -)j 

 nerve roots tilfelvtl 



Spinal nerve 



Posterior costotransverse ligament' 



Costal process of lumbar vertebrae 



Sacrum (dorsal surface) 



Anterior sacral foramina' 



Filum of dura mater 

 (coccygeal ligament) 



Sacral canal 



Sacral nerve I 



Posterior ramus of sacral nerve I 



Continuation of spinal dura mater 

 upon the roots of the sacra' nerves. 



Coccygeal nerve 



