Wilhelm His was a German anatomist and embryologist born in 1831. He is best known for his pioneering work in the field of cardiac anatomy and for his contributions to the understanding of the heart's conduction system. His research laid the groundwork for future studies in both anatomy and physiology. His is also recognized for developing the His bundle, a collection of heart muscle cells that play a crucial role in transmitting electrical impulses, coordinating heartbeats. His work significantly advanced the understanding of how the heart functions, influencing both medical education and clinical practices in cardiology.