Human Circulatory System Diagram: Pulmonary & Systemic Circuits Explained #3537148 (License: Personal Use)

The image depicts the dual-loop circulatory system: the pulmonary circuit carries deoxygenated blood from the right ventricle through pulmonary arteries to the lungs for gas exchange, then back via pulmonary veins to the left atrium. The systemic circuit pumps oxygenated blood from the left ventricle through the aorta to the body’s capillaries, where oxygen is delivered and CO₂ is collected before returning via systemic veins to the right atrium. Color coding distinguishes oxygenated (red), deoxygenated (blue), and gas-exchange capillaries (purple).

Used in biology, anatomy, and physiology educational resources-textbooks, online courses, and medical training-to teach cardiovascular function. Matches user intent for visual learning, exam prep, or clinical reference on heart and blood flow pathways.