The Vascular System 
sc, subscapular vein (Fig. 60). 
sc’, subscapular artery. 
sc.d., sc.s., right and left subclavian 
arteries. : 
si, spleno-intestinal artery. 
sp, splenic vein. 
s.v., Sinus venosus, 
t, thoracic vein. 
t!, thoracic artery. 
tb, tibial artery. 
th, thryoid artery. 
tr, tracheal vein. 
u, I-4, urogenital arteries (num- 
bers on right side of figure). 
ul‘, ulnar artery. 
15 
205 
v, vertebral vein. 
vt, vertebral artery. 
vca, anterior vena cava. 
vh, hepatic vein. 
vpd, vps, right and left pulmonary 
veins. 
x, x?, connectives between collater- 
alis colli and carotid. 
y, artery to shoulder and skin. 
z, Z* z?, branches of common 
carotid. 
I, 2%, 3, branches of ischiadic 
artery. 
