126 



OSTEOLOGY 



only feebly marked. The angle is slight, and situated close to the tubercle. The 

 body is not twisted, so that both ends touch any plane surface upon which it may 

 be laid ; but there is a bend, with its convexity upward, similar to, though smaller 

 than that found in the first rib. The body is not flattened horizontally like that 

 of the first rib. Its external surface is convex, and looks upward and a little outward ; 

 near the middle of it is a rough eminence for the origin of the lower part of the 



FIG. 124 



FIQ. 125 



Single articular facet 



Fia. 127 



Single articular facet 



Fia. 128 

 Single articular facet 



FIGS. 124 to 128. Peculiar ribs. 



first and the whole of the second digitation of the Serratus anterior; behind and 

 above this is attached the Scalenus posterior. The internal surface, smooth, and 

 concave, is directed downward and a little inward: on its posterior part there is 

 a short costal groove. 



Tenth Rib. The tenth rib (Fig. 126) has only a single articular facet on its head. 



Eleventh and Twelfth Ribs. The eleventh and twelfth ribs (Figs. 127 and 128) 

 have each a single articular facet on the head, which is of rather large size; they 



