Human Circulatory System Diagram - Anatomy and Blood Flow Explained #45861 (License: Personal Use)

The image depicts a simplified yet accurate schematic of the human cardiovascular system, highlighting the pulmonary and systemic circuits. Oxygen-depleted (blue) blood returns from the body to the right side of the heart, travels to the lungs for oxygenation, then returns (red) to the left heart for distribution to tissues. Arrows indicate directional flow, and key structures-including atria, ventricles, and major vessels-are clearly differentiated by color and position.

Used in educational websites, medical textbooks, and health literacy resources to explain basic cardiovascular physiology; matches user intent for learning anatomy, preparing for exams, or understanding heart health.