What are the slower heart chambers in heart?

The atria are the slower heart chambers. They are located at the top of the heart and are responsible for receiving blood from the body and pumping it to the ventricles. The ventricles are the larger, more powerful chambers located at the bottom of the heart. They are responsible for pumping blood out of the heart to the body. The atria contract and relax in a coordinated fashion with the ventricles, allowing blood to flow through the heart in a continuous cycle.