The extrinsic pathway of coagulation is activated by

Question

Quizplus · Accepted Answer

The extrinsic pathway is activated when tissue factor is released by damaged endothelium. This leads to the activation of factor VII, which in turn activates the rest of the coagulation cascade, ultimately leading to the formation of a clot. Platelet activation is part of the overall coagulation process, but it is not specifically part of the extrinsic pathway. Activation of proenzymes exposed to collagen is a part of the intrinsic pathway, not the extrinsic pathway. The liver does produce heparin, but it is not directly involved in activating the extrinsic pathway. The conversion of prothrombin to thrombin is a step in the coagulation process but is not specific to the extrinsic pathway.

The Extrinsic Pathway of Coagulation Is Activated by