342 



THE HUMAN BODY AND ITS FOOD 



Frontal Bone 



Parietal Bone 



FIG. 275. 



The Skeleton and its Parts. 



end of one bone 

 fitting into the 

 socket of another, 

 and are called 

 ball-and-socket 

 joints. 



(3) Those in 

 which one bone 

 glides over an- 

 other; these are 

 called gliding 

 joints. 



354. The Skele- 

 ton. The human 

 skeleton (Fig. 

 275) consists of 

 206 bones, which 

 together form the 

 frame work of the 

 head, trunk, and 

 limbs. The bones 

 of the head make 

 up the skull. 

 The cranium, or 

 "brain box," is 

 made up of 8 bony 

 plates joined to- 

 gether. The face 

 is supported by 

 14 bones, and 



