Chap. V] 



THE SKELETON 



67 



flava which connect the transverse processes. The spinal curves 

 confer a considerable amount of springiness and strength upon the 

 spinal column, which would be lacking were it straight, and the 

 elasticity is further increased by the ligamenta flava, and the disks 

 of fibro-cartilage. These disks or pads also mitigate the effects 

 of concussion arising from falls or blows, and allow of a certain 

 amount of motion between the vertebrae. The amount of motion 

 permitted is greatest in the cervical region. 



Abnormal conditions. — As a result of injury or disease the 

 normal curves may become exaggerated and are then spoken of as 

 curvatures. Curvatures may be lateral, dorsal, or ventral. 



FALSE RIBS 



FLOATING RIBS 



J. J.IESNABD. 



Fig. 45. — Thorax. (10th rib is defective ; it should be attached to the costal 



cartilage above.). 



