Question

During blood coagulation fibrinogen is converted to fibrin by

• A. Thromboplastin
• B. Thrombin
• C. Hirudin
• D. All of the above

Answer 1

The correct option is B Thrombin

During an injury, the platelets aggregate at the site of injury and get transformed. The transformed platelets release thromboplastin which converts the prothrombin into thrombin. Thrombin is the proteolytic enzyme that converts the fibrinogen into the thin filaments of fibrin which makes the insoluble network of the fibril and forms the clots of the blood containing the red blood cells, pathogens, platelets, factors, etc.

Thus, the correct answer is option B.