THE BONES OF THE TRUNK 



13 



lateral surface of the body, where each encroaches rather nearer 

 the upper than the lower surface. They are smooth and almost 

 cylindrical, and their direction is outwards and backwards. Above 

 and below' each pedicle there is a well-marked vertebral notch, the 

 superior being narrower and slightly shallower than the inferior. 

 The superior notch lodges a spinal nerve. When two vertebrae are 

 in position the contiguous vertebral notches, at either side, form 

 an intervertebral foramen. 

 The laminsB spring each from a pedicle. They are compressed 



Costo-transverse Foramen 



Anterior Tubercle 



Costo-transverse 

 Lamella ^ 



Body 



Back of Inferior ' 

 Articular Process 



Costal Process 



Transverse Process 



_ Pedicle 



Superior Articular 

 Lamina Process 



Inferior Notch 

 B Inferior Articular Process 



Fig. 7. — The Fifth Cervical Vertebra. 

 A, Superior view ; B, Lateral view. 



from before backwards, and their direction is backwards and 

 inwards to the middle line, where they fuse, and so give rise ta the 

 spinous process. The upper border and adjacent portion of the 

 posterior surface of each lamina give attachment to the liga- 

 mentum subflavum connecting it to the lamina above, whilst the 

 lower part of the anterior surface near the lower border gives 

 attachment to the ligamentum subflavum connecting it to the 

 lamina below. 



The spinous process is formed by the fusion of the two laminae. 



