congenital diseases of the heart set. ventricular and atrial septal defect,

defect cardiology human medical health organ diagram disease anatomy cardiac circulation heart biology diagnosis structure valve aorta heartbeat cardiovascular medicine atrium muscle artery congenital vector attack system open education atrial ventricle condition birth blood problem pathology healthcare pressure care drawing contraction flow aortic myocardium ventricular septal hypertrophic dilated cardiomyopathy set