SHOULDER, ARM, FOREARM, AND HAND. 175 



2. Paliuaris longns ; origin, inner condyle by the common tendon. 



3. Flexor carpi radialis ; origin, inner condyle by the common tendon. 



4. Flexor carpi ulnaris; origin, inner condyle and olecranon. The flexor carpi 

 ulnaris has two heads, with the ulnar nerve between them. This muscle also 



Triceps 



Brachialis antieus 



Pronator radii tares 



Flexor carpi radialis 



Palraaris longus 



Flexor carpi ulnaris 



sublimia digitorum 



Biceps 



Brachio-radialis 



Flexor longus pollioia 



FIG. 120. FRONT OF THE FOREARM: FIRST LAYER OF MUSCLES. 



forms one of the boundaries for the ulnar groove. Notice carefully the extensive 

 insertion of the flexor carpi ulnaris muscle into (i) the pisiform bone, (2) the 

 unciform bone, (3) the anterior annular ligament, (4) the base of the fifth meta- 

 carpal bone. 



