or vectorized by ZooFari using Inkscape (see all SVGs and images). English heartbloodflowdiagramming mechanism Urdu دل میں خون کے بہاؤ کا آریگرامنگ میکانزم
captioned as follows: English: Frontal view of a human heart. The white arrows indicate normal bloodflow. Other languages: Čeština: Schematicky znázorněný
|Description={{en|1=The illustration shows how a varicose vein forms in a leg. Figure A shows a normal vein with a working valve and normal bloodflow. Figure