Human Heart Blood Flow Diagram - Circulation Explained #1664342 (License: Personal Use)

The image is a cross-sectional anatomical illustration of the human heart, color-coded to distinguish oxygen-rich (red) and oxygen-poor (blue) blood. Arrows trace the full circulatory loop: deoxygenated blood enters the right atrium from the body, passes to the right ventricle, then to the lungs for oxygenation; oxygenated blood returns to the left atrium, flows into the left ventricle, and is pumped out to the body via the aorta. Key structures like atria, ventricles, pulmonary artery, and vena cava are labeled with directional flow annotations.

Used in medical education, biology textbooks, health websites, and patient information portals to explain cardiac physiology and circulation. Matches user intent for learning or teaching cardiovascular anatomy and function.