Human Heart Anatomy and Blood Circulation Diagram #1821176 (License: Personal Use)

This medical illustration depicts a sagittal cross-section of the human heart, highlighting the four chambers (right atrium, right ventricle, left atrium, left ventricle), major vessels (aorta, pulmonary artery, vena cava), and directional blood flow using color-coded arrows-blue for deoxygenated blood and red for oxygenated blood. The diagram clearly shows how blood moves from the upper and lower body into the right side of the heart, to the lungs for oxygenation, then to the left heart and out to the body. Labels identify key structures including the pulmonary veins, aortic arch, and valve regions.

Used in educational healthcare websites, biology textbooks, and patient-facing resources to explain cardiac physiology and circulation; targets students, educators, and patients seeking to understand heart function and cardiovascular health.