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Question

Blood platelets help in the blood coagulation mechanism by liberation of

A
Thromboplastin
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B
Thrombin
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C
Prothrombin
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D
None of the above
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Solution

The correct option is C Thromboplastin
Thromboplastin is a plasma protein aiding blood coagulation through catalyzing the conversion of prothrombin to thrombin. It is a complex enzyme that is found in brain, lung, and other tissues and especially in blood platelets and that functions in the conversion of prothrombin to thrombin in the clotting of blood, called as thrombokinase.

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