Human Heart Anatomy Diagram - Coronary Arteries and Veins Illustrated #3574642 (License: Personal Use)

This line-art illustration depicts the external anatomy of the human heart, emphasizing the branching pattern of the coronary vasculature. Red lines represent oxygenated arterial supply (e.g., left and right coronary arteries), while blue lines indicate deoxygenated venous return (e.g., cardiac veins draining into the coronary sinus). The drawing includes major chambers and great vessels such as the aorta and pulmonary trunk.

Used in educational contexts-biology textbooks, medical school slides, health literacy websites-to teach cardiovascular anatomy and circulation. Matches user intent for visual learning, study aids, or patient education materials.