THE BRACHIAL ARTERY 653 
border of the extensor carpi and supplies cutaneous twigs. Anastomoses occur 
with the ulnar and recurrent interosseous arteries. 
The point of origin is inconstant and it is not uncommon to find two arteries instead of one. 
Often a large branch for the posterior deep pectoral muscle is detached close to the origin or arises 
from the brachial directly. 
Ulnar nerve Long head of triceps 
rein vessels Medial head of triceps 
Median nerve 
Coraco-brachialis 
Tensor fascie antibrachii 
Ulnar head of flexor 
carpi ulnaris 
Humeral head of flexor 
carpi ulnaris 
Biceps brachii 
Cephalic vein 
Y : Ulnar head of deep flexor 
ema COMMUNUCANS 
: lexor carpi radialis 
Cutaneous branch of PF pi radialis 
musculo-cutaneous nerve 
Extensor carpi radialis Common interosseous 
artery 
Accessory cephalic vein —— Median artery 
Cephalic vein Ulnar vessels and nerve 
Radius Deep fascia 
Flexor carpi radialis 
Lateral branch of median 
nerve 
Medial branch of median 
nerve 
Artery of rete carpr 
dorsale 
Flexor carpi ulnaris 
Medial ligament of 
eave Lateral volar nerve 
Tendon of extensor 
carpi obliquus Lateral volar met. artery 
and vein 
| Common digital vein Medial volar nerve 
Branch to deep volar 
arch Common digital artery 
Medial volar met. artery 
Dorsal metacarpal artery 
Flexor tendons 
Fic. 567.—Dissection oF RicHT ForEaARM AND Carpus or Horse; Meprat View. 
1, Ulnar vessels; 2, cutaneous branch of musculo-cutaneous nerve; 3, 3, satellite veins of median artery; 4, posi- 
tion of cubital lymph glands; 5, anastomosis of ulnar and lateral volar metacarpal arteries; 6, brachialis muscle; 7, 
superficial digital flexor; 8, deep digital flexor. Dotted lines indicate contour of flexor carpi radialis, most of which has 
been removed. (After Schmaltz, Atlas der Anatomie des Pferdes.) 
