io6 



ANATOMY AND PHYSIOLOGY 



FIG. 87. MUSCLES OF THE FOREARM. 

 i, 2, 4, 4, 5, Muscles of arm; 3, tendon 

 of insertion of biceps; 6, round pronator; 

 7, radial flexor of wrist; 8, 9, palmaris 

 longus; 10, n, ulnar flexor of wrist; 12, 13, 

 brachio-radialis; 14-18, muscles and ten- 

 dons belonging td posterior of forearm; 

 19, 19, superficial flexor of fingers; 20, 20, 

 21, 21, tendons of the same, showing 

 fissure; 22, 22, tendons of deep flexor com- 

 ing through fissure to reach the third row 

 of phalanges. (Sappey.) 



FIG. 88. MUSCLES OF THE FOREARM, 



DORSAL ASPECT. 



i, Aponeurosis of triceps; 2, upper 

 end of brachio-radialis; 3, 4, long radial 

 extensor of wiist; 5, 6, short radial ex- 

 tensor of wrist; 7, 8, 8, 9, 9, extensors of 

 thumb; 10, 10, annular ligaments; n, 12, 

 12, common extensors of fingers; 13, 14, 

 special extensors for index and little 

 fingers: 15, 16, ulnar extensor of wrist; 

 18, ulnar flexor of wrist; 19, posterior 

 border of ulna; 20, olecranon process of 

 ulna; 21, media lepicondyle. (Sappey.) 



