Joints of the Spine. 



169 



Ligamentum longitudinale posterius 

 (superficial layer. See page 168) 



Canalis hypoglossi 



Os occipitale 



Membrana tectoria 



Ligamentum cruciatum 



atlantis 

 Ligamentum apicis dentis -^? 



Arcus anterior atlantis 3 



Dens epistrophei - 

 Cavum articulare 



Ligamentum transversum 

 atlantis 



Ligamentum longitudinale 

 anterius 



Epistropheus 



Fibrocartilago 

 intervertebralis 



Corpus vertebrae - 



cervicalis III 



-- Membrana atlantooccipitalis 



posterior 

 A. vertebralis 



Arcus posterior atlantis 



-- N. cervicalis I 



Foramen intervertebrale 



-- Ligamentum flavum 



4 



Arcus epistrophei 



Ligamentum longitudinale posterius 



221. Median section through the occipital bone 

 and first three cervical vertebrae with ligaments; 



right half of section, viewed from the left, somewhat schematic; 



magnification 4:3. 



(The ligamentous masses have been partially separated from one another.) 



Enumerated from before backward the ligaments of the articulatio atlanto- 

 occipitalis and the articulatio atlantoepistrophica lie behind one another as 

 follows : ligamentum longitudinale anterius with the membrana atlantooccipitalis anterior, 

 ligamentum apicis dentis, ligamentum cruciatum atlantis, membrana tectoria, ligamentum 

 longitudinale posterius (superficial layer), membrana atlantooccipitalis posterior. 



