Ions participating in clotting mechanism are:

# Ions participating in clotting mechanism are:

A. Iron

B. Copper

C. Calcium

D. Aluminium

The correct answer is C. Calcium.

In the presence of calcium ions and other clotting factors, factor X activates an enzyme called prothrombin activator. This enzyme then converts the plasma protein prothrombin into thrombin. Thrombin is an enzyme that, in turn, converts fibrinogen to fibrin which causes the blood to clot.

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Dental MCQs - Multiple Choice Questions in Dentistry

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