Human Circulatory System Diagram: Pulmonary & Systemic Circuits Explained #210403 (License: Personal Use)

This medical illustration depicts the dual-loop circulatory system: the pulmonary circuit carries deoxygenated blood from the right ventricle to the lungs via pulmonary arteries, and returns oxygenated blood via pulmonary veins to the left atrium. The systemic circuit pumps oxygenated blood from the left ventricle through the aorta to body tissues, where capillaries facilitate gas exchange before deoxygenated blood returns via systemic veins to the right atrium. Key structures-including atria, ventricles, major vessels, and capillary networks-are labeled and color-coded per oxygenation status.

Used in educational contexts such as biology textbooks, medical training modules, and health science websites to teach cardiovascular physiology; targets students, teachers, and healthcare learners seeking foundational understanding of blood circulation.