Human Heart Anatomy Diagram - Chambers, Valves, and Blood Flow Explained #1499034 (License: Personal Use)

This medical illustration depicts the human heart in cross-section, clearly labeling the right and left atria and ventricles, the superior and inferior vena cava, pulmonary arteries and veins, aorta, and all four major valves (tricuspid, pulmonary, mitral, aortic). Arrows indicate the direction of blood flow-deoxygenated blood enters via the vena cavae into the right atrium, passes through the tricuspid valve to the right ventricle, then to the lungs via the pulmonary artery; oxygenated blood returns via pulmonary veins to the left atrium, flows through the mitral valve to the left ventricle, and is pumped out through the aortic valve into the aorta.

Used in educational contexts such as biology textbooks, medical training modules, online anatomy courses, and health information websites. Matches user intent for learning or teaching cardiovascular anatomy and physiology.