558 



BLOOD-VASCULAR SYSTEM OF THE HORSE 





3. The anterior circumflex (or j^rehumoral) artery (A. circumflexa humeri 

 anterior) arises usually at the upper border of the teres major. It passes forward 

 and outward between the two parts of the coraco-brachialis or between the latter 



Ulnar nerve 



Brachial vessels 

 Median nerve 



Cephalic vein 

 Anastomotic branch 



Cutaneous branch of 



median yterve 



Extensor carpi radiahs 



Median nerve 



Accessory cephalic vein 



Cephalic vein 



Post, radial {or median) 

 artery 



Flexor carpi internus (cu. 



Internal lateral ligament 



of carpus 



Tendon of extensor 



carpi ohliquns 



Metacarpal tuberosity 



Dorsal interosseous artery 

 and nerve 



Long liead of triceps 



Internal head of triceps 



Ulnar vessels 



Tensor fasciae antibrachii {cut) 



Ulnar head of flexor carpi medius 

 Humeral origin of flex, carpimed. 

 Origin of flexor carpi internus 



Common interosseous artery 

 Superficial flexor of digit 

 Ulnar head of deep flexor 

 Fascia, cut and reflected 

 Deep flexor of digit 

 Ulnar vessels and nerve 



Outer branch \ of median 

 Inner branch j nerve 



Toulon of flexor carpi internum 



Flexor carpi 7nedius {cut) 

 Ext. volar met. artery 

 Ext. met. nerve 

 Ext. met. vein 

 Int. met. nerve 

 Large nwt. artery 

 Int. volar met. artery 

 Branch to deep volar arch 

 Superficial flexor tendon 

 Check ligament 

 Internal metacarpal rein 



Fin. 442. — Dissection of Richt Forkarm and Carpus of Horse, Internal Surface. 

 C-b., Coraco-brachialis muscle; E.m., internal eincoiulyle of humerus; R, subcutaneous surface of radius. (After 



Schmaltz, .Ml;is d. Aiiat. <1. Pferdes.) 



and the humerus. It gives branches to the coraco-brachialis and deep pectoral and 

 ends in the upper part of the biceps and in the mastoido-humeralis. It anastomoses 

 with the posterior circumflex. 



