THE ARTICULATIONS OF 'I HE TRUNK 



177 



Basi-occipital and basi- 



sphenoid 

 Corpus ossis basilaris 



Anterior arch of the atlas 

 Arcus anterior atlantis 



Odontoid process-'" 



Dens epistrophei 



Spinal canal 



Canalis vertebralis- 



First dorsal vertebra 

 Vertebra thoracalis I." 



External occipital 

 protuberance 



Protuberantia 

 occipitalis externa 



- Ligamentujn nuchse 



Spinous process of the 

 seventh cervical vertebra 



Processus spinosus 

 vertebrae prominentis 



\ Supraspinous ligament 

 iLig. supraspinale 



(Intervertebral foramina 

 | (Foramina intervertebralia 



Occipital bone 

 ' Os occipitale 



Posterior or long 

 "f occipito-axial ligament- 



Membrana tectoria 

 First cervical vertebra 

 Vertebra cervicalis I. 



First dorsal vertebra 

 "Vertebra thoracalis I. 



Posterior common 



ligament 



"Lig. longitudinale 

 posterius 



First lumbar vertebra 

 Vertebra lumbalis I. 



Interspinous ligaments 



"Ligg. interspinalia 



First lumbar vertebra 

 Vertebra lumbalis I. 



Sacral promontory 



Promontorium 



First sacral vertebra 

 Vertebra sacralis I. ' 



Sacral canal 



Canalis sacralis 



Sacral canal 



Canalis sacralis 



Lateral sacrococcygeal 

 ligament 



Lig. sacrococcygeum laterala 



-Interarticular sacrococcygeal 

 ligament 



Lig. sacrococcygeum articulare 



"Deep posterior sacrococcygeal 

 ligament 



1 / Lig. sacrococcygeum posterius 



profundum 



FIG. 402. POSTERIOR COMMON LIGAMENT AND 

 ITS RELATION WITH THE POSTERIOR OCCIPITO- 

 AXIAL AND THE DEEP POSTERIOR SACRO- 

 COCCYGEAL LIGAMENTS. (THE VERTEBRAL 

 COLUMN WITH THE SPINAL CANAL OPENED BY 

 THE REMOVAL OF THE NEURAL ARCHES ; 

 SEEN FROM BEHIND.) 



1 Macalister calls this ligament ligamentum latum axiale, the broad axial ligament. TR. 



First coccygeal verteb a 

 Vertebra coccygea I. 



Vertical axis of the vertebral colu rm 



FIG. 401. INTERVERTEBRAL Discs, INTERSPIN- 

 OUS LIGAMENTS, SUPRASPINOUS LIGAMENT, 

 LIGAMENTUM NUCH^E. SPINAL CANAL; INTER- 

 VERTEBRAL FORAMINA. VERTICAL Axis OF 

 THE VERTEBRAL COLUMN. (MEDIAN SECTION 

 THROUGH THE VERTEBRAL COLUMN.) 



Ligamenta columnae vertebralis The ligaments of the vertebral column. 



