Question

The coagulation of blood occurs due to

• A. Destruction of erythrocytes.
• B. Destruction of leucocytes.
• C. Change of fibrinogen into fibrin.
• D. Formation of serum.

Answer 1

Answer: (C)

Change of fibrinogen into fibrin.

The mechanism of blood clotting involves The presence of calcium and other clotting factors, Factor X activates an enzyme called prothrombin activator. The enzyme prothrombin activator then converts plasma protein prothrombin into thrombin. Thrombin is the enzyme which in turn converts fibrinogen into fibrin. Polymerized fibrin together with platelets forms a clot at the wound site. Hence The coagulation of blood occurs due to change of fibrinogen into fibrin.

So, the correct answer is 'Change of fibrinogen into fibrin'.