Human Circulatory System Diagram - Anatomy & Function Guide #55547 (License: Personal Use)

This medical illustration depicts the full human circulatory system, emphasizing the central role of the heart as a dual-pump mechanism. Arteries (in red) distribute oxygen-rich blood from the heart to tissues, while veins (in blue) return oxygen-depleted blood back to the heart and lungs. The diagram includes major vessels such as the aorta, vena cava, pulmonary arteries, and capillary networks in limbs and organs.

Used in educational websites, anatomy textbooks, health blogs, and medical training materials to explain cardiovascular physiology; targets users seeking visual learning aids for biology or healthcare studies.