Human Circulatory System Diagram - Heart, Lungs, and Blood Flow Explained #1985444 (License: Personal Use)

The image depicts the human cardiovascular system with a detailed anatomical heart at the center, connected to the lungs above and a simplified human silhouette below. Blue vessels represent deoxygenated blood returning to the heart and traveling to the lungs via the pulmonary artery, while red vessels show oxygenated blood leaving the lungs and circulating systemically through the aorta to the body. Arrows indicate direction of flow, emphasizing the separation of pulmonary and systemic circuits.

Used in educational contexts-biology textbooks, medical websites, or health literacy pages-to explain how blood circulates through the heart and body. Matches user intent for learning anatomy, physiology, or preparing for exams like MCAT or NCLEX.