Heart physiology is the study of how the heart functions in pumping blood throughout the body. This includes understanding the mechanisms of electrical conduction, muscle contraction, and overall organ function in maintaining circulation. Researchers in this area study the different diseases and conditions that can affect the heart, as well as the effects of various interventions and treatments on heart health. By studying heart physiology, scientists hope to improve our understanding of cardiovascular health and develop better strategies for preventing and treating heart-related diseases.