alleryStart learning →What does thrombin do in the common pathway?
AIt converts fibrinogen into fibrin
BIt converts fibrin into fibrinogen
CIt converts plasminogen to plasmin
DIt converts prothrombin to factor X
Answer & Solution
Correct answer: A. It converts fibrinogen into fibrin
1. Thrombin acts on factor I, the soluble plasma protein fibrinogen.
2. It converts fibrinogen into insoluble fibrin protein strands.
3. Those strands form the mesh in which platelets and blood cells are trapped, giving the clot.
4. The reversed option would dissolve the clot rather than build it.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.5 Hemostasis_
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