THE SKELETON 



IS") 



Figure 193. - - Dia- 

 gram of Bone 

 Structure. 



Figure 192. 



mlcrophotograph of 

 Bone. 



Compare Figure 193. 



Figure 194. — Car- 

 tilage. 



body, the bones grow because the individual cells are 

 supplied with food from the blood. 



Cartilage occurs near the ends of the bones, in the ear, 

 and in the nose. It is especially prominent in the wrists 

 and ankles of children. Therefore children should not 

 be lifted by their hands nor allowed to stand until a 



Figure 195. — X-ray of a Normal and a Broken Elbow. 



