STERNUM 



85 



front of the chest. At rest its upper end is opposite the lower 

 border of the second dorsal vertebra, and its lower end opposite 

 that of the tenth. 



Jnterclavicular Notch 



Clavicular Surface 



Fcr ist Costal Cartilage 



FIG. 31. STERNUM. 



Ossification. Several centres are developed before birth, the 

 whole becoming fused about the fortieth year. 



