Human Heart Anatomy Diagram - Major Vessels Explained #3365162 (License: Personal Use)

The image is a stylized anatomical illustration of the human heart with three numbered vessels pointing to critical structures: vessel 1 is the aorta (red, carrying oxygenated blood from the left ventricle), vessel 2 is the pulmonary artery (blue, carrying deoxygenated blood from the right ventricle to the lungs), and vessel 3 represents the vena cava (returning deoxygenated blood to the right atrium). Arrows indicate flow direction, and color-coding distinguishes oxygenated (red) from deoxygenated (blue) circulation.

Used in educational contexts-biology textbooks, medical training modules, or health websites-to teach cardiovascular anatomy. Matches user intent for visual learning, quick reference, or classroom instruction on heart structure and blood flow.