During the formation of a thrombus, fibrin
A - Scottish Highers Human Biology - Question 15 - 2018
Question 15
During the formation of a thrombus, fibrin
A. converts prothrombin to thrombin
B. causes the formation of fibrinogen
C. forms a meshwork to clot the blood
D. causes... show full transcript
Worked Solution & Example Answer:During the formation of a thrombus, fibrin
A - Scottish Highers Human Biology - Question 15 - 2018
Step 1
A. converts prothrombin to thrombin
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Answer
This statement is incorrect. Fibrin itself does not convert prothrombin into thrombin; rather, prothrombin is converted to thrombin through the action of the enzyme prothrombinase.
Step 2
B. causes the formation of fibrinogen
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Answer
This statement is incorrect as well. Fibrin is formed from fibrinogen, but fibrin does not cause the production of fibrinogen; instead, fibrinogen is already present in the blood and is converted to fibrin by thrombin.
Step 3
C. forms a meshwork to clot the blood
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Answer
This statement is correct. Fibrin forms a meshwork of fibers that traps blood cells and platelets, thereby creating a stable blood clot to stop bleeding.
Step 4
D. causes the release of clotting factors
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Answer
This statement is incorrect. Fibrin does not cause the release of clotting factors; the activation of clotting factors occurs during the coagulation cascade that leads to fibrin formation.
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