372 



THE MUSCLES OF THE DOG 



The biceps brachii lies almost entirely on the medial surface of the humerus. 

 It is long and fusiform. The tendon of origin is round, and is bound down in the 

 intertuberal groove by an annular ligament. It is enveloped by an extension of 

 the synovial membrane of the shoulder joint.- The tendon of insertion is bifid; 



Teres major 



Latissimus dorsi 



Long head of triceps 

 Tensor fascice antibracliii 



Medial head of triceps 



Flexor carpi ulnaris 



Flexor cori>i radialis 



Superficial digital flexor 



Deep digital flexor 



' Subscapularis 

 . Supraspinatus 



-f Coraco-brachialis 



Accessory head of triceps 



--■ Biceps brachii 



Humerus 



Extensor carpi radialis 

 Pronator teres 



Roilius 



Radial head of deep 

 digital flexor 



Fig. 322. — Muscles of Thoracic Limb of Dog; Medial View. (Ellenberger-Baum, Anat. des Hundea.) 



one branch is attached to a rough mark on the lateral surface of the ulna, just below 

 the semilunar notch; the other branch ends on a distinct mark on the postero- 

 medial aspect of the proximal part of the shaft of the radius, one to two inches be- 

 low the head. 



