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A member asked:

1-how clot formation in capillaries is different from clot formation in veins or arteries? 2- why blood clotting in veins and arteries is common as compared to clotting in capillaries?

A doctor has provided 1 answer

Many capillaries have the diameter just bigger than the size of a red blood cell, This makes creating the "bundle" of many red cells that are part of a clot a size issue. When capillaries are injured the blood spills outside in the area creating a bruise. That outside collection of blood can create a clot at that location.

Answered 4/2/2021

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