Factor Va is a protein that plays a crucial role in the blood coagulation process. It acts as a cofactor for Factor Xa, enhancing its ability to convert prothrombin into thrombin, which is essential for blood clot formation. When Factor Va is activated, it helps accelerate the clotting cascade, ensuring that bleeding stops efficiently. However, it is important to note that Factor Va can be inactivated by activated protein C to prevent excessive clotting, maintaining a balance in the coagulation system.