334 



PHYSIOLOGY. 



The Spinal Column. The central part of the skeleton 

 is the backbone, or spinal column. As a whole it is a 

 column, widening toward the base, composed of a series of 

 separate bones called vertebrae. 



Hole for Blood Tubes 



Body 



terior Articular Facet 



,.. Neural Arch 



Spinous Process 

 Neural Ring 



Fig. 102. Anterior View of Cervical Vertebra. 



Body- 



Spinous Process 

 Fig. 103. Left Side View of Cervical Vertebra. 



Each vertebra has seven processes, four articulating 

 (two anterior and two posterior), two transverse, and one 

 spinous. 



Take a thoracic vertebra and in the presence of the class trim off the 

 processes with a pair of bone-forceps. The vertebra will be seen to be 

 essentially a ring, or padlock, consisting of the body and neural ring or 

 arch. 



