Sammi decides to design a model to show how the digestive and circulatory systems interact. She lines a large plastic tube with a corrugated cardboard tube. Then, she connects smaller plastic tubes to the large plastic tube. These small tubes connect to a pump. She drills small holes in the large tube so that all of the plastic tubes connect. She plans to run a green fluid representing food through the cardboard tube.
Match each part of Sammi's model to the bodily structure it represents. One bodily structure has already been labeled for you.