THE SKELETON 



257 



Carpal. 



enters the elbow joint with the humerus and is large at that 

 end. The radius, which merely touches a 

 projection on the humerus, is large at the 

 other end and alone makes the real joint with 

 the small bones of the wrist, the ulna articulat- 

 ing with but one of these. 



In the wrist are eight very small bones, the 

 carpals, between which very little movement 

 occurs, Following these is a series of five 

 elongate bones, the metacarpals, which form the 

 framework of the 

 body of the hand. 

 In Figure 129 these 

 are seen jointed to 

 the wrist bones ; also 

 the phalanges, the 

 bones of the fingers, 

 two in the thumb 

 and three in each 

 finger. 



The Hip and the 

 Leg. On first ex- 

 amination, the 

 skeleton of the hip 

 or pelvic girdle 

 looks very unlike 

 that of the shoulder 

 girdle; Fig. 130. 



One very large and irregular bone is on each 

 side; it is broad behind wnere it joins the 

 sacral portion of the backbone; and at the 

 point farthest from the midline, where the 

 body protrudes at the hip, it presents a cavity 

 into which fits the end of the upper bone of 



the leg. It curves around to the front and meets the bone 



Radius 



Vino 



FIG. 128. THE 



BONES OF THE 

 ARM 



The radius and 

 ulna are shown 

 in the position 

 they assume 

 when the hand 

 is held with the 

 palm down- 

 wards (in pro- 

 nation). 



Phalanges 



FIG. 129. THE BONES OF 

 THE WRIST AND HAND 



