Bones of the Trunk. 



Tulterciilum, 



Capituh 



91. The Second Rib, superior 



view. 



At the place where the neck, Cottum, is continued into the shaft, 

 there is on every rib the tuberosity or tubercle, Tuberculum costae, 

 covered with cartilage, for articulation with the articular surface of the 

 transverse process of the lower of the two vertebrae with which the rib 

 is connected. At the back part of the external surface is a rough line, 

 the angle, Anyulus costae (Fig. 89) ; it is well developed only from the third 

 to the tenth ribs, but coincides with the tubercle in the first and second 

 ribs. The second rib has at its external surface a rough prominence for 

 the attachment of the serratus magnus muscle, M. serratus anticus major. 



