58 VETERINAET STATE BOAED 



Name the muscles that aid iii flexing the shoulder-joint. ^ 



Teres externus (long abductor of the arm) and teres intemus 

 (adductor of the arm). 



l^me the muscles of the brachial region. 



Anterior region : the flexor brachii and humeralis obliquus. 

 'Posterior brachial region: the triceps, viz., caput magnum, caput 

 medium and caput parvum, and the anconeus. 



Name the muscles of the forearm. 



Four anteriorly, viz., anterior extensor of the metacarpus, 

 oblique extensor of the metacarpus, extensor pedis and extensor suf- 

 fraginis. 



Five posteriorly, viz., external flexor of the metacarpus, oblique 

 fle/xor of the metacarpus, flexor pedis perforatus, flexor pedis per- 

 forans and internal flexor of the metacarpus. 



Describe the flexor pedis perforans. 



Situated immediately behind the radius and is composed of three 

 portions which unite at the carpus to continue to the inferior 

 extremity of the digit by a long and powerful tendon. 



Origin: The summit of the epitrochlea, summit and posterior 

 border of the olecranon, and posterior surface of the radius, by 

 the three portions, respectively. Above the carpus, these three 

 unite and pass through the carpal sheath and between the two 

 terminal branches of the perforatus tendon to its insertion, the 

 semilunar crest of the os pedis. 



Name all the muscles that would be severed in amputating the fore limb 



just above the knee. 

 ^ AU those of the forearm mentioned above. 



Name the muscles that flex the carpus. Give their attachments. 



1. External flexor of the metacarpus, from the external condyle 

 of the humerus to the supercarpal and external metacarpal bones. 



2. Oblique flexor of the metacarpus from the base of the epi- 

 trochlea and olecranon to the supercarpal. 



3. Internal flexor of the metacarpus from the base of the epi- 

 trochlea to the head of the internal metacarpal bone. 



4. Plexor pedis perforatus arises on the summit of the epi- 

 trochlea and extends to the second phalanx ; in contracting shortly, 

 it flexes the carpus. 



5. Plexor pedis perforans, described above. 



Give the origin, insertion and action of the flexor brachii. 

 Origin : Coracoid process of the scapula. 



