Matching Pairs Circulatory System ReviewOnline version In this review, you will be matching the terms and definitions. by prachers 1 What is the role of veins? 2 What is the role of arteries? 3 What is the role of the circulatory system? 4 How do veins make sure blood keeps moving in only ONE direction? 5 This type of blood vessel has thin walls to carry blood under low pressure 6 This type of blood vessel has THICK walls to transport blood under high pressure. Circulate oxygen throughout the body and transport nutrients to cells Veins Carry blood AWAY from the heart. With the use of VALVES (e.g. tricuspid valve) Carry blood BACK to the heart. Arteries