98 



PRACTICAL ANATOMY. 



and at the sides with the costal cartilages. It presents 

 three portions, an upper manubrium, middle gladiolus, 



SXCRNO-untO. MACTOD 



FIG. 45. STERNUM AND COSTAL CARTILAGES. 



and inferior or ensiform appendix. The manubrium is 

 a heavy, flattened, trilateral plate of bone, which pre- 



