Human Heart Anatomy Diagram - Labeled Chambers, Valves, and Vessels #1202666 (License: Personal Use)

This medical illustration depicts a cross-section of the human heart, highlighting the four chambers (right atrium, right ventricle, left atrium, left ventricle), major valves (semilunar and atrioventricular), and principal vessels (aorta, pulmonary artery, pulmonary vein, anterior and posterior vena cava). The septum dividing left and right sides is clearly indicated, and color coding distinguishes oxygenated (red) from deoxygenated (blue) blood pathways.

Used in biology, anatomy, and physiology educational materials-textbooks, online courses, medical training modules-to help learners visualize cardiac structure and circulation. Matches user intent for studying or teaching cardiovascular system fundamentals.