The term for the study of the heart is "cardiology." This branch of medicine focuses on diagnosing and treating conditions related to the heart and blood vessels. Cardiologists, specialists in this field, manage a range of cardiovascular diseases, from heart attacks and arrhythmias to heart failure and congenital heart defects. The study of cardiology encompasses various diagnostic tests, such as electrocardiograms (ECGs), echocardiograms, and stress tests, to evaluate cardiac function. Advancements in technology and research continue to enhance understanding and treatments, making cardiology a vital discipline in modern healthcare, aimed at improving cardiovascular health and overall well-being.