part of the human heart. anatomy. diastole and systole.filling and pumping of human heart structure anatomy anatomical diagram

anatomical anatomie anatomy and aorta artery atrium background blood body cardiac cardiology cardiovascular cava chamber circulation circulatory coronary cross design diagram diastole drawing flow health healthy heart human illustration internal isolated left medical muscle orchestra organ part pulmonary pump pumping right science scientific section structure system systole systolefilling tissue tube vacuum valve vector vein ventricle white