Human Heart Anatomy Diagram - Chambers, Valves, and Blood Flow #3045820 (License: Personal Use)

This educational diagram depicts the human heart’s internal structure with precise labeling of the right and left atria and ventricles, along with the tricuspid, pulmonary, mitral, and aortic valves. Arrows indicate the direction of blood flow from the superior and inferior vena cava into the right atrium, through the pulmonary circuit, and back via pulmonary veins to the left atrium, then out through the aorta. The illustration uses color coding-blue for deoxygenated blood pathways and red for oxygenated-to enhance comprehension.

Used in biology, physiology, or medical education web pages, textbooks, or e-learning modules; targets students, teachers, and healthcare learners seeking visual reinforcement of cardiac anatomy and circulation.