Question

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Explain Coagulation or Clotting of Blood..........in Briefly.

Write all steps involving in this Topic.

Answer 1

When a blood vessel is cut, blood escapes from it. But soon a clot is formed on the wound and the flow of the blood is stopped.. Which is called clotting or coagulation
Clotting occur in series of steps as follows

1>> The injured tissue cells and platelets which disintegrate at the site of the wound release a substance thrombokinase

2>> The thrombokinase acts as an enzyme and with the help of calcium ions present in the plasma, it converts a substance prothrombin of plasma into thrombin

3>> Thrombin in the presence of calcium ions, reacts with the soluble fibrinogen of plasma to convert it into insoluble fibrin. Fibrin is a solid substance that forms threads. These microscopic threads of fibrin are sticky and form a network at the wound

4>> Blood cells are trapped in the network of the fibrin ; the network then shrinks and squeezes out the rest of the plasma which is in the form of a clear liquid, the serum. The solid mass which is left behind is called clot


Hope it will help you

Answer 2

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Blood coagulation is also known as blood clotting. It is the process in which blood changes from the liquid state to the semi-solid state, to form a clot to prevent the excessive loss of blood from the broken blood cells. This results in homeostasis, stopping of blood loss, and lastly the repair.

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