THE ULNAR REGION. 



407 



Nerves. All the muscles of this group are supplied by the eighth cervical 

 nerve through the ulnar nerve. 



FIG. 243. Muscles of the left hand. Palmar surface. 



Actions. The Abductor minimi digiti abducts the little finger from the middle 

 line of the hand. It corresponds to a dorsal interosseous muscle. It also assists 

 in flexing the proximal phalanx. The Flexor brevis minimi digiti abducts the 

 little finger from the middle line of the hand. It also assists in flexing the 

 proximal phalanx. The Opponens minimi digiti draws forward the fifth meta- 

 carpal bone, so as to deepen the hollow of the palm. The Palmaris brevis corrugates 

 the skin on the inner side of the palm of the hand. 



