What is the primary mechanism by which thrombomodulin regulates coagulation?

A By binding to and activating protein C ✓
B By inhibiting the activity of factor Xa
C By enhancing the activity of antithrombin III
D By promoting the formation of fibrin clots

Explanation

Thrombomodulin binds to and activates protein C, which then inhibits the coagulation cascade.

Source

Guyton and Hall Textbook of Medical Physiology
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Medium MEDICAL Confidence: high