Human Heart Anatomy Diagram - Blood Flow Through Chambers and Valves #3045805 (License: Personal Use)

This educational illustration depicts the human heart in cross-section, highlighting the right and left atria and ventricles, semilunar and atrioventricular valves, and major vessels including the aorta, pulmonary artery, vena cava, and pulmonary veins. White arrows indicate direction of blood flow-deoxygenated blood enters the right side, gets oxygenated in the lungs, and returns to the left side for systemic circulation. The color-coding (blue for deoxygenated, red for oxygenated) clarifies functional pathways.

Used in biology and medical education websites, textbooks, and e-learning modules to teach cardiovascular physiology; targets students, educators, and healthcare professionals seeking visual reinforcement of heart function and circulation.