Human Heart Anatomy Diagram - Interior View with Blood Flow Labels #1821186 (License: Personal Use)

This black-and-white educational diagram displays a cross-sectional view of the human heart, highlighting the four chambers (right and left atria and ventricles), major valves (tricuspid, pulmonary, mitral, aortic), and associated vessels including the vena cava, pulmonary artery, pulmonary veins, and aorta. Arrows indicate blood flow direction-deoxygenated blood enters from the body into the right atrium, passes to the right ventricle and lungs, then returns oxygenated via pulmonary veins to the left atrium and ventricle before being pumped systemically. The key clarifies dashed arrows as blood flow paths.

Used in biology, physiology, or health education web pages, textbooks, or e-learning modules to teach cardiovascular structure and function; matches user intent for visual learning, exam prep, or curriculum support.