Which of these actions is NOT accomplished by thrombin
A)stimulation of conversion of fibrinogen to fibrin
B)activation of tissue thromboplastin, which initiates the extrinsic clotting pathway
C)activation of factor XIII (fibrin-stabilizing factor)
D)enhancement of platelet aggregation

Question

Quizplus · Accepted Answer

Thrombin does not activate tissue thromboplastin (factor III) which is a component of the extrinsic pathway. Instead, tissue thromboplastin activates factor VII which then activates factor X, leading to the common pathway and eventually the formation of thrombin.

Which of These Actions Is NOT Accomplished by Thrombin