FIG. 47. Sternum : i, Anterior ; 2, Posterior aspect. A, jugular notch and attachment of interclavicular 

 ligament. H, area covered by interlacing fibres (tendinous) continuous with Pect. major, and thus 

 somewhat roughened. Posterior surface below manubrium is covered by thick fibrous tissue, on 

 which C indicates lines of pleural reflection, and D the area in relation with pericardium, where the 

 left pleura passes away from the middle line. The costal cartilages are shown in their places ; on the 

 right the eighth reaches the sternum, an occasional occurrence. 



