VEINS OF THE THORACIC LIMB 



691 



ijiedial border of the extensor carpi, and joins the cephahc vein at the proximal 

 end of the forearm. 



The deep veins of the forearm are variable. Commonly two median veins 



Fig. 590.-:— Dissection of Pectoral Region and Anterior Part of Abdominal Wall of Horse. 

 1, Jugular vein; 2, loose connective tissue of axillary space; 3, ascending branch of inferior cervical artery; 4, de- 

 scending branch of same; 5, cephalic vein; 6, median nerve; 7, ulnar nerve; 8, brachial artery; 9, brachial vein; 10, 

 external thoracic vein; 11, anterior abdominal artery and vein; 12, branches of sixth cervical nerve; 13, cutaneous 

 branch of axillary nerve; 14, cutaneous branch of musculo-cutaneous nerve; IS, cervical cutaneus; 16, sterno-cephalicus; 

 17, scalenus; IS, brachiocephalicus; 19, anterior superficial pectoral; 20, posterior superficial pectoral; 31, anterior 

 deep pectoral; 22, posterior deep pectoral; 23, abdominal cutaneus; 24, obliquus abdominis externus; 2o, rectus- 

 abdominis; 26, coraco-brachialis; 27, tensor fascise antibrachii; a, prescapular lymph glands; b, prepectoral lymph 

 glands; c, axillary lymph glands; d, cubital lymph glands; c. x., xiphoid cartilage. (After Schmaltz, Atlas d. Anat. 

 d. Pferdes.) 



(Vense medianae) accompany the artery of like name, one in front and one behind. 

 A third vein arises by radicles emerging from the proximal part of the deep flexor; 



