Human Heart Anatomy Diagram - Labeled Chambers, Valves, and ECG Waveform #219797 (License: Personal Use)

This educational diagram displays three views of the human heart: a colorful 3D anterior view, a grayscale cross-sectional anatomy, and a detailed labeled cutaway highlighting the superior and inferior vena cava, right and left atria, pulmonary and mitral valves, left ventricle, pulmonary artery, and pulmonary vein. An inset electrocardiogram (ECG) shows the P, Q, R, S, and T waves corresponding to cardiac electrical activity.

Used in medical education, physiology textbooks, health websites, and patient information materials to explain cardiac structure and function; matches user intent for learning or teaching human cardiovascular anatomy and basic electrophysiology.