THE VEINS. 319 
_ V. cephalica (Fig. 130).—Several superficial branches 
lying in the palm of the hand unite to form a common trunk 
which curves about the ‘radial side of 
the wrist and here unites with a simi- 
larly formed trunk from the dorsum of 
the hand. The vein formed by this 
union, vena cephalica (antibrachii) (c), 
passes to the elbow accompanying the 
radial nerve (g) and the collateral radial 
1 artery (2), and lying on the extensor 
carpi radialis longus muscle just beneath 
the integument. It receives small lateral 
superficial branches. At the elbow it 
.divides into two: these are the vena 
cephalica (humeri) (2) and the vena 
mediana cubiti (4). The latter passes 
beneath the pectoantibrachialis muscle, 
across the biceps, and unites with the 
brachial vein in the concavity of the 
elbow. 
The vena cephalica (humeri) passes 
at the elbow onto the upper arm, fol- 
lowing the lateral border of the 
clavobrachial muscle. It thus 
reaches the acromiodeltoid muscle, 
where it divides into two branches. 
One passes inward beneath the 
acromiodeltoid, and joins the 
vena circumflexa posterior (a 
branch of the axillary). The 
second continues over the 
outer surface of the shoulder, 
and finally joins the vena 
transversa scapule (a branch 
of the external jugular). 
D. V. jugularis externa 
(Fig. 131; Fig. 65, 5, page 
‘ 109).—The external jugular 
Fic. 130. 
SUPERFICIAL 
ARTERIES, {/\ 
VEINS, AND \ 
Nerves on & 
THE. ExTENsor \ 
SIDE OF THE 
ARM AND Dor- 
SUM OF THE 
Hanp. 
@, V. cephalica; 
6, V. mediana cu- 
biti; ¢, V. cepha- 
lica antibrachii: d, 
A. collateralis radi- 
alis_ superior; , 
Aa. and Vv. digi- 
tales dorsales; 7, 
A. radialis; g, su- 
perficial radial 
nerve; 4, N. mus- 
culocutaneus; 2, N. 
cutaneus medialis. 
