What Parts Work Together?

Have you ever wondered how the human heart keeps us alive? Well, it's like a hardworking pump made of different parts! The main parts are the atria, which take in blood, and the ventricles, which push it out. Valves act like doors, making sure blood moves the right way. Arteries and veins are like roads that guide blood all over your body. They all work as a team to keep your blood flowing smoothly. If one part stopped working, the whole system could struggle.

👀 Visualize This: Imagine drawing a heart. Label the atria and ventricles. Add arrows to show how blood flows in and out. How do valves direct the flow?