How does your heart work to pump blood throughout your body?

The heart pumps blood throughout the body by contracting and relaxing in a rhythmic pattern. When the heart contracts (squeezes), it pushes blood out of the chambers and into the arteries. This blood is then carried to all parts of the body, delivering oxygen and nutrients. When the heart relaxes, it allows blood to flow back into the chambers so it can be pumped out again. This continuous cycle ensures that all cells in the body receive the necessary blood supply for proper functioning.