Why blood doesn't clot inside the blood vessels but it coagulate outside the blood vessels
Answers
Answer:
Blood clotting factors are intrinsic and extrinsic. Intrinsic factors when are in cells, tissues and plasma blood do not clot. Some of the factors as surface activation factor stimulates blood to clot when exposed.
Inside the body liver secretes a substance called heparin. This prevents clotting of blood in blood vessels. But if there is internal injury, platelets break to release a thermoplastic substance. It initiates clotting.
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Answer:
Blood proteins, prothrombin and fibrinogen do not form blood clot inside blood vessels as these are in inactive form due to the presence of anticoagulant heparin. At the injury, these are activated by thrombokinase enzymes of bloods platelets.
Explanation:
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