No they do not. "Veins" are in fact, the blood vessel that moves blood to the heart so that it can get moved to the lungs in order to gain oxygen. "Arteries" are the blood vessel that moves blood away from the heart so that way the various body parts can gain that oxygen to do there thing.
Plasma
Plasma
vein
Veins are vessels which carry blood towards the heart. In addition to blood itself veins carry liquid plasma and it constituent factors.
subclavian veins
yes
Veins
The general purpose of a "plasma center" is to collect plasma from people for medical purposes through plasma donation. The plasma is then used to develop life saving therapies.
They collect (used) blood for re-use.
venules
Charles Drew helped collect 14,500 pints of blood plasma for the Blood for Britain project.
The 4 blood vessels are plasma, arteries, veins, and capillaries. From: Joey Sukupantee