Chalk Heart Walk

**NOTE: I forgot to mention that the red blood cell enters the heart through the superior/inferior vena cava from the lungs**

In this activity, I learned a lot about the heart that I never knew before. Besides learning just the names of different arteries, veins, and valves, I was intrigued by the number of detailed parts in the organ. I never knew there were different muscles like the papillary muscle or the chordae tendinae, since I always believed the heart was just one big muscle. I also learned about purkinje fibers, which I never heard of, that send nerve impulses to the heart. I also surprisingly learned that blood travels from the body to the heart then to the lungs, then to the heart then to the body, starting over again. I always thought lungs travels to the hearts and back to the lungs, and the body to the heart to the body. I never knew the circulatory system was a complicated double loop. Drawing the heart was also really fun since it's been too long since I've played with chalk.