350 



DISSECTION OF THE THORAX. 



ligaments, one for each half of the arch, which approach one another along 

 the middle line, and reach on each side from the pedicle of the arch to the 

 root of the spinous process. 



Each consists of elastic yellow tissue. It is attached above to the inner 

 surface of the one, but below to the upper border and outer surface of the 

 other neural arch. 



Between the first two vertebrae and the skull there are special fibrous 

 ligaments in the corresponding situation (see p. 1 66). 



Ligaments of the spines. Along the tips of the spinous processes of the 

 dorsal lumbar vertebrae is a longitudinal band of fibres (fig. 115, l ) the 



Fig. 114. 



Fig. 115. 



AN INNER VIEW OF THE NEURAL ARCHES LIGAMENTS OF THE PROCESSES OF THE VERTEBRAE, 



OF THE VERTEBRAS, WITH THEIR INTER- AND OF THE RIBS. (Bourgery.) 



POSED LlQAMKNTS. 



1 aud 2. Ligamenta subflava. (Bourgery 1. Supraspinous band of ligament, 



and Jacob.) 2. Ligamentum subflavuin. 



3. Posterior costo-transverse ligament : on the op- 



posite side the band has been removed and 

 the joint opened. 



4. Intertrausverse ligament. 



supraspinous ligament. It is thickest in the lumbar region of the spine, 

 and is formed by the superficial and deep fibres ; the former reach over 

 three or more spines, whilst the latter pass from bone to bone. It is closely 

 united with the tendons of the muscles. 



The band of the ligamentum nuchae, which is composed of fibrous tissue, 

 takes its place in the neck. 



Along the spinal column there are also thin membranous inter spinous 

 ligaments (fig. 108, 6 ), which reach from the root to the tip of the spinous 

 processes. The strength of these bands is dependent upon the interval 

 they fill ; they are more marked in the lumbar than the other vertebra, 

 and they are least strong in the cervical region. 



Ligaments of the transverse process. In the loins the inter-transverse 



