DESSHCIION OF (THE: VASCOLAKR SYVSTAM, 57 
5. The Brachio-cephalic (cxnomznate) Veins. The 
two large veins which unite to form the pre-cava. 
Each after a short course divides into the sub-clavian 
and external jugular. 
6. The Sub-clavian Vein brings back blood from 
the arm, shoulder, etc. Beyond the point where it 
joins the external jugular it receives the swd-scapular 
vein. Followed into the arm it will be found to re- 
ceive a number of muscular branches. 
7. The External Jugular passes toward the _ head, 
lying just below the skin in its course through the 
meck. Near the level. of the larynx the jugular 
divides into two branches, the facza/ and the ¢enporal, 
bringing back blood from the head. The sub-maxil- 
lary gland lies between these two veins and sends a 
small vein to each of them. The facial veins of the 
two sides are united by a wide cross-branch—the 
transverse Vein. 
8. The Internal Jugular. Near the junction of the 
external jugular and sub-clavian the former receives 
the internal jugular, which has a deeper course along 
the side of the trachea. It brings back blood from 
the brain. 
Ee Die ARTERIES OF THE: ANTERIOR . £OR- 
TION OF THE BODY. 
1. The Arch of the Aorta. Clean the fat, etc., from 
the arch. The following branches are given off from it: 
2. The Brachio-cephalic (zunomenate ) Artery, given 
off nearest to the heart. 
3. The Left Sub-clavian Artery, given off separately, 
and distributed to the left arm, shoulder, etc. 
4. The Common Carotid Arteries. Dissect out the 
brachio-cephalic trunk. The two common carotids 
