Matching Pairs Circulatory systemOnline version Match the sentences related to the circulatory system. by Evaristo Jaén García 1 It is in the middle of the chest. It works day and night to pump blood to every part of your body. 2 The blood is 3 The blood vessels 4 On the way it picks up nutrients and oxygen and drops off carbon dioxide and waste products 5 The heart is a red liquid that goes arund the body. are thin tubes in which blood circulates around your body. a muscle the size of your fist