THE UPPER LIMB 



553 



The palmaris longus is the representative of an original super- 

 ficial flexor of the fingers, the expanded portion of the tendon of 

 which remains as the palmar fascia. 



4. Flexor Carpi Ulnaris. — ^This muscle arises by two heads. One 



Biceps 

 Bracbialis Anticus 



Biachio-iadialis 



Flexor Sublimis Digitorum 

 Flexor Longus Pollicis 



Pronator Quadratus 

 Anterior Annular Ligament 



- Pronator Radii Ter'is 

 . Fle.vor Carpi Radialis 



. Palmaris Longus 



- Flexor Carpi Ulnaris 



Palmaris Brevis 



Fig. 194. — The Superficial Muscles of the Front of 

 THE Forearm. 



head arises from (i) the front of the internal epicondyle by means 

 of the common tendon ; (2) the deep fascia ; and (3) the inter- 

 j muscular septa between it and the palmaris longus and flexor sub- 

 I limis digitorum. The other head arises from (i) the inner aspect 

 of the olecranon process, and (2) the upper two-thirds of the posterior 



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