Keywords: Tetralogy fallot.jpg en Figure A shows the structure and blood flow inside a normal heart Figure B shows a heart with the four defects of tetralogy of Fallot 2013-11-12 21 40 56 National Heart Lung and Blood Institute NIH National Heart Lung and Blood Institute NIH PD-USGov Uploaded with UploadWizard Tetralogy of Fallot Medical diagrams |