Blood Clot 3D Video

Normal blood clotting seals blood vessels damaged by an injury to help stop blood loss. But sometimes blood clots block blood and oxygen from flowing through a blood vessel. An embolus is a blood clot that breaks off, travels through the bloodstream, gets stuck in a smaller blood vessel and blocks the blood supply. A thrombus is a blood clot that partially or completely blocks a vein or artery. Blood clots may form more easily if your blood flows very slowly through your veins because of inactivity, heart disease, or problems with your veins. Smoking and some medicines can also increase your risk.

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