Blood Flow

Trace the pathway of a drop of blood through the heart and body. Find the phrase 'blood enters the left atrium' and put a 1 in the box next to the phrase. Then identify the next place the drop of blood will go from there and put a 2 in that box. Continue the process until you have correctly identified the steps. Click 'check your answers' located at the bottom at any time. Correct positions will reveal part of a picture.