THE MUSCLES 121 



Fig. 56. — Medial or Inner Aspect of the Muscles of the Forelimb. 

 a, Supracondyloid ridge of humerus; ab, abductor pollicis; b, humerus; c, 

 humeral head of the flexor carpi ulnaris; cp, ento-triceps; d, insertion of a tendon 

 of flexor sublimis digitorum; e, ulnar head of flexor carpi ulnaris; eci, extensor 

 carpi radialis longus; ec2, extensor carpi radialis brevis; /, portion of the flexor 

 sublimis digitorum arising from the flexor profundvis digitorum; fs, the portion 

 of the flexor sublimis arising from the palmaris longus; pp, common tendon of 

 the flexor profundus digitorum; Jlx, flexor profundus digitorum; g, radial part of 

 flexor sublimis; tendon to second digit; h, flexor profundus digitorum; /, styloid 

 process of radius; k, pronator quadratus; /, flexor carpi radialis; o, short part of 

 the ento-triceps; ol, olecranon process; ot, tendinous loops; pect, pectoralis cut 

 off; pi, origin of the palmaris longus which is reflected caudad; pt, pronator teres; 

 r, ento-triceps; ro, coracobrachialis; s, split in the tendon of the flexor sublimis 

 revealed by cutting away the tendinous loop; ss, supraspinatus; si, supinator 

 longus; tm, teres major; tb, the head of the humerus; x, a tendon of the flexor 

 profundus digitorum whose portion between the two letters is cut out to dis- 

 play the insertion of d. (" Ecto-triceps" in figure should be "medi-triceps.") 



