THE STRUCTURE OF THE BONES 



Cancellous bone tissue 

 Substantia spongiosa 



Medullary spaces of the cancellous 

 tissue 



Surface of the cross-section 



Compact bone tissue 



Substantia compacta 



v Haversian systems of lamellae 



Surface of the longitudinal section 

 Volkmann's canals 



Outer fundamental lamellae 



FIG. 8. DIAGRAM OF THE STRUCTURE OF BONE. 



Thickening of the periosteum__ 

 at the site of origin of a 

 muscle 



Periosteum 



Compact bone tissue 

 Substantia compacta 



Bone-marrow 



Medulla ossis 



Exposed surface 

 of the bone 



Periosteum 



V, 



Periosteum 

 FIG. 9. PART OF THE MIDDLE SEGMENT OF THE FEMUR FROM WHICH THE PERIOSTEUM 



HAS BEEN PARTIALLY REMOVED. 

 The medullary canal (cavum medullare) has been opened, and the hone-marrow (medulla ossis) is seen. 



Periosteum and Bone-Marrow (Medulla Ossium). 



2 2 



