OSTEOI OGY. 



GENERAL OS 



The greater portion of the 

 consisting of cartilages, and 

 than the cartilages, which, though bar . 

 are either paired or single, the latter 



The bones of the human body van 

 bone is the thigh l>one or femur: the small< 

 ides. According to form, we usually 

 flat bones, and short boms, whil< 

 malic bonis. 



The long bones have in general a cylindrical si . th 



With few exceptions, they consist of a middl< 

 extremities (epiphyses*). The shaft contains 

 bone-marrow, and it is on this account that thes 

 bony substance of their shaft surrounds this medullar 

 is known as the compact substance, in contradistin* I 

 consists of a fine network and forms th< 

 ,the exception of a very thin outer compact lay< 



The long bones of the human body are found only in thi 

 are as follows: the clavicle, the humerus, the radiu . 

 bones of the fingers and toes, the femur, the 

 ribs are classified with the flat bones. 



The broad or flat bones are markedly fl 

 flat or curved plates. Their central portion 

 however, by a more or less thick 1. 

 are provided with well-marked pro 5. Inl 



- the diploe, while the lau rs of i om] 

 tables. The flat bones of the human I 

 the ribs, and many of the cranial 1h>; 



The short bones have an irregular 1 >m 

 others. They consist almost entirel) 

 quently very thin. They arc frequentl) 



* The terms epiphyses and extremil . ones design.. 



as extremities usually contain portions i I 



