So the entire point of the intrinsic and extrinsic pathway is to form these two components to basically form this dimer that consists of the two subbutants factor ten and factor five, we call prothrombinase. So notice that when we actually form thrombin thrombin not only activates fibrinogen into fibrin and calls upon platelets and aggregates factor 13 that is needed to form the covalent bonds between the fibrin molecules. But Thrombin actually goes back to the beginning of this entire pathway and activates three different types of factors. It activates factor eleven, it activates factor eight and it activates factor five. And this process amplifies, it produces even more of these dimer complexes that are needed to produce these blood clots. So Thrombin goes on to factor eleven, it takes the inactive form and it activates it.