128 



THE SKELETON 



groove above is continuous with the inferior border of the neck of the rib and 

 gives attachment to the internal intercostal muscle ' 



The superior border is rounded, and affords attachment to the internal and 

 external rntercostal muscles. The inferior border commencLabruply near the 

 angl^ and gives attachment to the external intercostal muscle ''"'''P''^ ''^^' ^^® 



The sternal end of the shaft is cupped for the reception of the costal cartilage. 



Fig. 154.— The Seventh Rib of the Left Side. (Seen from below.) 



Tubercle 



Articular facet o2 

 tuburcle 



Neck 



Costal groove 



Sternal end for costal 

 cartilage 



oostSrrteri;.?'^^Jhrnnn^ ^'- 7k^ w^^^' ^"^ ^^"^^ numcrous branches from the inter- 

 It is not ZfJo^ l^.r '''•oafest flattest, strongest, shortest, and most curved of all the series 



