164 



SPECIAL ANA TOMY OF THE SKELETON 



ribs. The outer border is convex, thick, and rounded, and at its posterior part 

 gives attachment to the first serration of the Serratus magnus; the inner is con- 

 cave, thin, and sharp, and marked about its centre by the commencement of 



FIG. 131 



Angle 



slightly marked 



and dose to 



tuberosity. 



First serration 

 Serratus magnus 



FIG. 133 



Single articular facet. 



FIG. 134 



Single articular facet 



FIG. 135 



Single articular facet. 



FIGS. 131 to 135. Peculiar ribs. 



the rough surface for the Scalenus anticus. The anterior extremity is larger and 

 thicker than any of the other ribs. 



Second Rib. The second rib (Fig. 132) is much longer than the first, but bears 

 a very considerable resemblance to it in the direction of its curvature. The non- 



