what are the veins in the circulatory system function
Your blood is pumped around by the heart which is the main function in your circulatory system. The heart sends blood through your blood vessels. The circulatory system consists of the heart, blood vessels, lymph, blood, and the lymphatic vessels and glands.
The vascular system, also called the circulatory system, is made up of the vessels that carry blood and lymph through the body. The arteries and veins carry blood throughout the body, delivering oxygen and nutrients to the body tissues and taking away tissue waste matter.