The extensors of the wrist are moderators of the long flexors 

 of the fingers; the flexors of the wrist are moderators of the 

 extensors of the ringers. 



The dorsal interossei abduct the fingers from the middle 

 one; the palmar adduct; the interossei and lumbricales flex 

 the first phalanx and extend the last two. 



Flexion in the Fingers. Extension in the Fingers. 



First phalanx, by the inter- By the extensor communis. 



ossei and lumbricales. 



Second phalanx, by the flexor By the interossei and lumbri- 



sublimis. cales. 



Third phalanx, by the flexor By the interossei and lumbri- 



profundus. cales. 



When we flex the fingers they tend to approach, due to lateral 

 ligaments and obliquity of the tendons. 



The palmaris longus makes tense the palmar fascia, feebly 

 flexes the forearm and wrist; all the muscles from the com! vie 

 feebly flex the forearm. 



Palmaris brevis wrinkles the skin over the hypothenar emi- 

 nence and protects the ulnar vessels and nerve from pressure 

 when a foreign body is grasped. 



Extension in the thumb is in the plane of abduction of the 

 fingers, and its abduction is a movement forward. The action 

 of its muscles and those of the little finger are indicated by 

 their names; the flexors of the first phalanx in either case 

 also extend the last, as the interossei would. The ulnar extensor 

 and flexor of the carpus are moderators of the thumb extensors. 

 There are three flexors of the wrist (including the palmaris 

 longus) and three extensors, three flexors of the fingers and 

 three extensors, three flexors of the thumb and three extensors. 



THE MUSCLES AND FASCLE OF THE LOWER 



EXTREMITY 



FASCLffi OF THE THIGH 



The superficial fascia is continuous with that of other parts 

 of the body. Thick over gluteal region, passes over Poupart's 



