RIBS 



87 



is a groove for the subclavian artery. On the inner border, about 

 .an inch from the anterior extremity, is the scalene tubercle. 

 The surfaces are directed upwards and downwards. 



Subcostal 

 Groove \ 



Medullary - 

 Foramen 



Ang 



MCCK 



^Upper Facet on Head 



.Ridge for Interarticular 

 Ligament 



_ Lower Facet on Head 



Articular Part of Tubercle 

 Ligamentous Part of Tubercle 



'jHead 



Sternal 

 Kxtremity 



Fiu. 32. A TYPICAL RIB. 



The second rib resembles the first in shape and in having 

 no twist, but is a good deal larger. The surfaces are directed 

 obliquely, similarly to those of the other ribs. 



