VEINS OF THE THORACIC LIMB 691 
medial border of the extensor carpi, and joins the cephalic vein at the proximal 
end of the forearm. 
The deep veins of the forearm are variable. Commonly two median veins 
Fic. 590.—Dissection orf PecTorRaL REGION AND ANTERIOR PART OF ABDOMINAL WALL OF Horse. 
1, Jugular vein; 2, loose connective tissue of axillary space; 3. 
3, ascending branch of inferior cervical artery; 4, de- 
, ulnar nerve; 8, brachial artery; 9, brachial vein; 1/0, 
external thoracic vein; 11, anterior abdominal artery and vein; 12, branches of sixth cervical nerve; 
branch of axillary nerve; 14, cutaneous branch of musculo-cutaneous 
scending branch of same; 4, cephalic vein; 6, median nerve; 7 
13, cutaneous 
1erve; 15, cervical cutaneus; 16, sterno-cephalicus; 
17, scalenus; 18, brachiocephalicus; 19, anterior superficial pectoral; 20, posterior superficial pectoral; 2/, anterior 
deep pectoral; 22, posterior deep pectoral; 23 24, obliquus abdominis externus; 25, rectus 
abdominis; 26, coraco-brachialis; 27, tensor fascie antibrachii; a, prescapular lymph glands; 6, prepectoral lymph 
glands; c, axillary lymph glands; d, cubital lymph glands; c. x., xiphoid cartilage. (After Schmaltz, Atlas d. Anat. 
d. Pferdes.) 
abdominal cutaneus; 
(Venz medianz) accompany the artery of like name, one in front and ene behind. 
A third vein arises by radicles emerging from the proximal part of the deep flexor; 
