Human Circulatory System Diagram - Arteries, Veins, and Heart Anatomy #3627526 (License: Personal Use)

This anatomical diagram displays the major vessels of the human circulatory system, with red lines representing arteries that transport oxygen-rich blood from the heart to tissues, and blue lines indicating veins that return oxygen-depleted blood to the heart. The heart is centrally located, with branching vessels extending through the torso, arms, and legs, demonstrating systemic circulation pathways.

Used in educational settings-biology textbooks, health science websites, and classroom presentations-to teach cardiovascular anatomy and physiology; matches user intent for visual learning and quick reference.