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Noun. 1. vertebral vein-a vein that goes through the foramina of the cervical vertebrae and forms a plexus around the vertebral artery; empties into the brachiocephalic vein. vena vertebralis.
From the arteries, blood enters smaller branches of arteries called arterioles and then the capillary network. Just as arterioles are smaller branches of arteries, so venules are smaller branches of veins. Venules receive blood from the capillaries and branch into veins that return blood to the heart. They do not have the need for the strength and elasticity of the arteries, so the walls of the veins are thin and almost floppy. To make up for this, many veins are located in the skeletal muscles, and the least movement of a limb squeezes the vein and drives the blood toward the heart.