Nervous Tissue 



53 



section, the spinal foramen. These foramina are segments of the spinal 

 canal, the walls of which are, therefore, partly the foramen walls and 

 partly the ligaments uniting the vertebrae. 



.Superior 

 articular process Pedicle 



Facet for 



tubercle of rib 



(Fovea costalis' 



trans versa lis) 



Transverse, 

 process 



Demi-facet for head of rib 

 (Fovea costalis superior) 

 Body 



Demi-facet for 

 head of rib 

 (Fovea costalis 

 inferior) 



roua process 



Spinous process 



Facet for| 

 tu bercle of 

 rib 

 (Fovea cos- ^ 



talis trans- 

 versalis) 



Superior articular 

 process 



Pedicle 



Demi-facet for head 



of rib (Fovea costalis 



inferior) 



Body 



Fig. 39. Fifth thoracic vertebra, actual size. (Cunningham, Anatomy.) A, right 

 view. B, from above. 



The * pedicles ' of the cervical, thoracic, and lumbar vertebrae (exclu- 

 sive of the upper ones, i. e., the 'atlas' and the 'axis') joining the 'body' of 

 each to its posterior portion, are notched, more deeply so on the under 

 side ('inferior notch'), so that as the vertebrae are articulated, the 'in- 



