74S 



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- 



'\N^ \ 



Fig. 616. — VEsaELS and Nerves of Medial Surface 

 OF Shoulder and Arm of Dog. 

 a, b, Brachial artery ; c, subscapular vessels ; d, 

 thoraco-dorsal vessels; e, deep brachial vessels; /, prox- 

 imal collateral ulnar vessels; p. brachial vein; ft, A", 

 cephalic vein; h', mediano-radial vein; i, anterior tho- 

 racic nerves; k, musculo-cutaneous nerve; /, median 

 nerve; m, ulnar nerve; n, radial nerve; o, thoraco- 

 dorsal nerve; 1, subscapularis muscle; 2, supraspinatus 

 muscle ; 3, teres major ; 4% latissimus dorsi ; 6, deep 

 pectoral muscle; 6, biceps brachii; 7, long headyofitri- 

 ceps; S, tensor fasciee antibrachii; 9, medial head of 

 triceps; 10, pronator teres. (Ellenberger-Baum, Anat. 

 d. Hundes.^ 



Fig. 617. — Arteries of Forearm op Dog; Medial 

 View. 

 Arteries: a, Brachial; a\ median; r, common interos- 

 seous; d, volar antibrachial ; e, radial; e', e", dorsal 

 and volar branches of e; f, f, cutaneous branches of e; 

 g, ulnar. Muscles: 1, Biceps brachii; S, extensor carpi 

 radialis; 3, pronator teres; 4, deep digital flexor; 5, 

 radius; 6, superficial digital flexor; 7, flexor carpi radi- 

 alis; 8, ulnaris lateralis; 9, hximerus. (Ellenberger- 

 Baum, Anat. d. Hundes.) 



scapularis and teres major^ turns around the posterior angle of the scapula, and 

 terminates in the supraspinatus, deltoid, trapezius, and brachiocephalicus. In 

 about half the cases it gives off the anterior circumflex, which often arises with the 



