THE HEAD NECK THORAX LOINS, &C. 61 



THE NECK. 



C, C, marks the extent of the cervical vertebrse ; D, the 

 dentata ; m, the atlas; n, the wing* of the atlas; o, the 

 large superior spine of the dentata ; p, the body of the 

 dentata ; q, the inferior spine of the dentata ; s, s, s, s, s, 

 the superior spines of the five remaining cervical vertebrae ; 

 r, r, r, r, r, the oblique processes of the five last cervical 

 vertebrae ; u, u, u, u, u, the transverse processes of the same 

 bones ; t, t, t, t, t, the inferior spines of the five last cervical 

 vertebrae. 



THE THORAX. 



V, V, the cariniform process of the sternum ; w, iv, w, iv, 

 w, w, w, the costae or true ribs ; y, y, y, y, y, y, y, y, y, y, 

 the ribs as distinguished from the costse ; x, x, x, x, x, x, x, x, x, 

 the cartilages by means of which the ribs are attached to the 

 sternum ; z, 2, z, z, z, z, z, the heads of the ribs ; 1,1,1,1,1, 

 the superior spines of the first five dorsal vertebrae, the 

 fifth being generally the longest spine in the body ; 2, 2, 2, 



2, 2, 2, 2, 2, the superior spines from the sixth to the thir- 

 teenth, towards which they slope downwards; the thirteenth 

 is generally the most upright spine in the dorsal region ; 



3, 3, 3, 3, 3, the last five of the superior of the back spines, 

 w^hich have an inclination forwards. 



THE LOINS, OR LUMBAR REGION. 



4, 4, 4, 4, 4, 4, the superior spines of the lumbar region, 

 thicker than the dorsal spines, and having a decided inclina- 

 tion forwards ; 5, 5, 5, 5, the projecting transverse pro- 

 cesses of the loins. 



THE SACRUM. 



6, 6, 6, 6, 6, the superior spines of the sacrum leaning 

 decidedly backward, thus leaving a large space between the 

 points of the last lumbar and the first sacral spine, at which 

 place occurs the great hinge of the back ; 8, 8, 8, 8, the 

 bodies of the sacral vertebrae. 



THE TAIL. 



7, 7, 7, 7, 7, 7, 7, 7, 7, the cocygeal bones. 



