The opposite of vein is artery
Vena cava. Whereas the aorta is the body's largest artery, the vena cava is the biggest vein.
Oxygen rich - the opposite of what the majority of veins are in the body.
Its is the artery. Vein is the opposite of this question
Veins carry blood to the heart but never away from the heart. They do the opposite job of an artery.
A dorsal vein in the hand is one. Most commonly, for blood draws in a lab, the antecubital vein (at the location opposite where the elbow flexes, between the forearm and the upper arm) is used.
In humans there is one external and one internal jugular vein. The internal jugular vein is much larger (about twice the diameter) of the external jugular. In the cat there are a pair of each vein but the external jugular vein is about twce as large as the internal. (Opposite of humans.)
The Superficial Vein is not an antecubital vein.
For peripheral venipuncture the common site is usually a vein in the arm (the anticubital fossa located on the opposite side of the elbow)
The Brachial Vein is a deep vein in the arm.
The ulnar vein is a deep vein.
The Testicular Vein and then into the Penisial Vein.
The femoral vein is a muscular vein.