Process of blodd Clotting

     When a blood vessel is damaged  and exposed to air, platelets in the blood stream release an enzyme, thrombokinase, which then converts prothrombin to an enzyme called thrombin. The thrombin converts soluble fibrinogen in the plasma to insoluble fibrin in the presence of calcium ions. The fibrin forms a network or mesh on the surface of the wound and blood cells are tracked. The clot dries to scab ober the wound.

       Importance of blood clotting 

   *It prevents loss of more blood from the body.

   * It ensures healing of the wound.

   *It prevents harmful microorganisms from entering the body.