<Li> Capillaries (the smallest blood vessels) </Li> <Li> Veins <Ul> <Li> Large collecting vessels, such as the subclavian vein, the jugular vein, the renal vein and the iliac vein . </Li> <Li> Venae cavae (the two largest veins, carry blood into the heart). </Li> </Ul> </Li> <Ul> <Li> Large collecting vessels, such as the subclavian vein, the jugular vein, the renal vein and the iliac vein . </Li> <Li> Venae cavae (the two largest veins, carry blood into the heart). </Li> </Ul> <Li> Large collecting vessels, such as the subclavian vein, the jugular vein, the renal vein and the iliac vein . </Li>

3 types of blood vessel and its function