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Question

Explain blood clotting with major events taking place in it.

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Solution

  • A blood clot forms when blood cells and fibrin strands clump together.
  • A clot that blocks blood flow is called a thrombus. Injured tissues and platelets release the clotting factor prothrombin activator and calcium ions.
  • Prothrombin activator converts the blood protein prothrombin to thrombin.
Thrombin splits fibrinogen to form fibrin.
  • Fibrin fibers form a mesh over the wound, trapping red blood cells and platelets and the bleeding stops.
  • The clot hardens and becomes smaller. New cells grow to the repair the wound site and enzymes plasmin is released to dissolve the clot.

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