Human Blood Circulation Diagram - Principal Veins and Arteries #1499045 (License: Personal Use)

The image is a schematic representation of systemic and pulmonary circulation, with arteries shown in red and veins in blue. Major vessels such as the aorta, superior and inferior vena cava, pulmonary arteries and veins, carotid, subclavian, femoral, and renal vessels are clearly labeled. The diagram emphasizes anatomical relationships and flow direction for educational purposes.

Used in medical education, anatomy textbooks, online learning modules, and health information websites to teach cardiovascular structure and function; matches user intent for visual learning or quick reference on circulatory anatomy.