The research area of heart focuses on studying the structure, function, and diseases of the heart. Researchers in this field aim to understand how the heart works, how it can be affected by various factors such as genetics, lifestyle, and environmental influences, and how to diagnose and treat heart-related conditions. This research area is crucial for advancing our knowledge of cardiovascular health and developing new therapies for heart diseases. Studies in this area often involve disciplines such as cardiology, physiology, biochemistry, and genetics.