Human Heart Anatomy Diagram - Chambers, Valves, and Blood Flow Explained #1664348 (License: Personal Use)

This medical illustration depicts a sagittal cross-section of the human heart, highlighting the right atrium, right ventricle, left atrium, and left ventricle, along with the tricuspid, pulmonary, mitral, and aortic valves. Arrows indicate the direction of blood flow: deoxygenated blood enters via the superior/inferior vena cava into the right atrium, passes through the right ventricle to the lungs via the pulmonary artery, returns oxygenated to the left atrium, then moves to the left ventricle and out through the aorta to the body. The septum separates oxygenated and deoxygenated circulation.

Used in educational contexts such as biology textbooks, medical training modules, health websites, and patient education materials to explain cardiac physiology and circulation; matches user intent for learning or teaching heart structure and function.