3i6 



HUMAN ANATOMY. 



The first metacarpal, shorter than the others, has a nearly flat dorsal surface 

 bounded by two definite borders, of which the outer is the sharper. The palmar 

 surface of the shaft is overhung by the ends. It is thickest and most convex towards 

 the inner side. These two points are the best guides to determine the side the bone 

 belongs to. The difference is striking in a transverse section. The base is broad 



Fig. 339. 



For radius 



SEMILUNAR 



OS MAGNUM 



Tuberosity 

 Abductor poinds 



TRAPEZOID 



Adductor obliqtiiis 

 Opponens poll. 



TRAPEZIUM 



Ext. OS. met. poll. 

 Flex, carpi rad. 



Opponens poll. 



For triangular cartilage 



PISIFORM 



Abductor minimi digiti 



CUNEIFORM 

 UNCIFORM 



Unciform process,7f^.r. brevis 



and oppon. >niii. dig. 

 Flex, carpi uliiaris 



Opponevs niin. dig. 



Palmar interossei 



Abductor and flexor 

 brevis pollicis 



Addtictores I 'jl/',! 

 obliquHS et 

 traiisi'crsus 



Abductor and 

 flex, brevis 

 min. digiti 



Flex, sublim. digit 



Flex, profund. digit 



Bones of right hand, palmar aspect. 



and runs to a point on the palmar aspect rather nearer the inner side. A groove 

 for the capsule surrounds the joint, and on the outer side is a tubercle for the tendon 

 of the extensor of the bone. The Sir\.\cu\:ir pi'oximal end is convex from side to side 

 and concave from above downward, forming a typical saddle-joint with the trapezium. 

 The head is also broader from side to side. The articular surface is carried onlv a 



