1036 



A MANUAL OF ANATOMY 



near the angles, and each muscle crosses over one, or it may be 

 two, intercostal Spaces. 



They are supplied by the intercostal nerves. 



The diaphragm will be found described in connection with the 

 abdomen. 



The Articulations of the Vertebral Column. 



I. Articulations of the Bodies of the Vertebrae. — ^These joints 

 belong to the class amphiarthrosis and subdivision symphysis. The 

 ligaments are as follows: the anterior common ligament, the pos- 

 terior common ligament, and the intervertebral discs. 



The anterior common ligament is a dense band of white glistening 

 fibres, which extends over the anterior surfaces of the bodies of 



Posterior Band of Superior 

 Costo-transverse Ligament 



Anterior Band of Superior 

 Costo-transverse Ligament 



. Anterior Common 



Anterior Costo-central , 

 or Stellate Ligament I 



Interarticulnr Ligament 



Fig. 426. — Ligaments of the Bodies of the VERTEBRiE and Right 

 Costo-central Joints. 



the vertebrae and intervertebral discs. It extends from the axis 

 to the first segment of the sacrum, and its fibres are disposed longi- 

 tudinally. The most superficial fibres extend from a given vertebra 

 to the fifth below it ; the intermediate fibres pass from a given 

 vertebra to the third below it ; and the deepest fibres pass from a 

 given vertebra to the one immediately below it. The fibres are 

 firmly attached to the intervertebral discs and margins of the 

 vertebral bodies, but very loosely to the centres of the bodies, on 

 account of the presence of bloodvessels. The anterior common 

 ligament is broadest in the lumbar region, and thickest in the 



