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How does blood clot and a wound heal?
  1. #1
    khushi is offline Junior Member
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    Jul 2013
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    Default How does blood clot and a wound heal?

    Whenever an injury takes place in which bleeding occurs, clotting and blood coagulation are initiated to stop the bleeding. Clot formation starts when platelets come in contact with a damaged blood vessel. They tend to stick to irregular surface of the blood vessel and build up to plug it if it is narrow enough. This also initiates the production of thrombin, an enzyme which catalyzes the conversion of the plasma protein fibrogen into string like molecules called fibrin. Fibrin molecules adhere to one another forming a fibrous matrix which immobilizes the fluid portion of the blood, causing it to solidify. It also traps red blood cells and platelets further increasing the density of the clot. Within half an hour, the platelets contract pulling the mesh tighter and forcing the liquid out. This action creates a denser and stronger clot on the skin called scab and it also constricts the wound, pulling the damaged surfaces closer together to promote healing.

  2. #2
    Yelly is offline Junior Member
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    I wish to say that it barriers red blood cells and platelets further increasing the solidity of the clog. Within 30 minutes, the platelets contract taking the capable stronger and pushing the fluid out.

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