external anatomy of human heart

muscular parts heart human vector myocardium vascular organ health care logo circulatory system anatomy right ventricle pumping blood chambers internal atherosclerotic cut infarction healthcare hospital stress pain brochure myocardial banner abstract rhythm hypertension vena cava ventricular educational iconheart beat study medical posterheart life vectorheart demonstrative body 3d problem muscle atrium pump biology vein pulmonary education cardiac anatomical healthy cardiology cardiovascular artery medicine disease coronary heartbeat attack surgery valve aorta pulse science circulation left diagram