Matching Pairs the three vital functionsOnline version tienes que relacionar la definición con sus nombres es muy fácil by José Antonio Fernández Martín 1 the respiratory system 2 the digestive system 3 the circulatory system 4 the excretory system transport blood all over the body absorb oxygen from the air and releases carbon dioxide breaks down the food we eat into smaller that our body can absorb eliminates the waste that our body can produce