748 CIRCULATORY SYSTEM OF THE DOG 
median artery under the flexor carpi radialis about a third of the way down the 
forearm, and divides into radial and ulnar arteries. Among its collateral branches 
are the following: (1) The large subscapular artery passes up between the sub- 
Fic. 617.—ArTERIES OF ForREARM oF Doc; Mepiab 
Fig. 616.—VeEssELS AND Nerves oF Mepiat SURFACE 
VIEW. 
OF SHOULDER AND ARM OF Dosa. 
a, b, Brachial artery; c, subscapular vessels; d, Arteries: a, Brachial; a’, median; c, common interos- 
thoraco-dorsal vessels; e, deep brachial vessels; /, prox- seous: d, volar antibrachial; e, radial; e’, e’’, dorsal 
imal collateral ulnar vessels; g, brachial vein; h, h’”, and volar branches of e; f, f’, cutaneous branches of e; 
cephalic vein; h’, mediano-radial vein; 7, anterior tho- g, ulnar. Muscles: 1, Biceps brachii; 2, extensor carpi 
racic nerves; , musculo-cutaneous nerve; J, median radialis; 3, pronator teres; 4, deep digital flexor; 4, 
nerve; m, ulnar nerve; n, radial nerve; o, thoraco- radius; 6, superficial digital flexor; 7, flexor carpi radi- 
2, supraspinatus  alis; 8, ulnaris lateralis; 9, humerus. (Ellenberger- 
Baum, Anat. d. Hundes.) 
dorsal nerve; 1, subscapularis muscle; 
muscle; 3, teres major; 4, latissimus dorsi; 5, deep 
pectoral muscle; 6, biceps brachii; 7, long head of tri- 
ceps; §, tensor fascie antibrachii; 9, medial head of 
triceps; 10, pronator teres. (Ellenberger-Baum, Anat. 
d. Hundes.’ 
scapularis and teres major, turns around the posterior angle of the scapula, and 
In 
about half the cases it gives off the anterior circumflex, which often arises with the 
terminates in the supraspinatus, deltoid, trapezius, and brachiocephalicus. 
