detailed schematic diagram human heart anatomy highlighting chambers arteries veins and valves medical education clean

human heart anatomy schematic diagram medical education atria ventricles aorta pulmonary arteries veins mitral valve tricuspid aortic septum oxygenated blood deoxygenated educational resources detailed cardiac system valves circulation healthcare illustration chart biological circulatory structure teaching tools labels vibrant colors anatomical chambers training function vessels pathways graphics physiology research study accuracy ai generated