Motional pathway of embolus Embolus from left heart cavity or arterial system Embolus from right heart cavity or venous system Embolus from portal veins Paradoxical embolism Retrograde thrombus• Embolus from left heart cavity or arterial system • Embolus from right heart cavity or venous system • Embolus from portal veins • Paradoxical embolism • Retrograde ethrombus Motional pathway of embolus: