Human Circulatory System Diagram - Organs and Major Blood Vessels #1499048 (License: Personal Use)

This educational diagram illustrates the human cardiovascular and related digestive/excretory anatomy, featuring the heart (right atrium, right ventricle, left atrium, left ventricle), lungs, liver, stomach, kidneys, and major vessels including the aorta, pulmonary arteries/veins, subclavian vessels, hepatic artery/portal vein, renal arteries/veins, and iliac vessels. Arteries are shown in red (oxygenated) and veins in blue (deoxygenated), with directional flow arrows indicating circulation pathways. The vena cava and gastric vessels are also clearly marked to support understanding of systemic and portal circulation.

Used in medical textbooks, online anatomy courses, health education websites, and classroom teaching to help students and professionals visualize blood flow and organ relationships; matches user intent for learning or reviewing human physiology fundamentals.