Fig. 47. — Bones of Man's Aem and Hand. 



A. Humerus: 4, shaft ; 6, internal condyle ; 7 and 8, surface for 

 radius and ulna. B. Radius : 1, surface for humerus ; 2, neck ; 

 3, tubercle; 4 and 5, surface for wrist-bones ; 6, shaft. C. Ulna: 1-3, 

 sigmoid cavity for humerus ; 4, shaft ; 5, styloid process. D. Bones of 

 the hand : 1, The eight bones of the wrist ; 2-2, The five metacarpal 

 bones, that of the thumb supporting two other bones (phalanges), 

 each of the others supporting three such bones. 



