So Zymogen Seven is activated into its active form. And then this enzyme number Seven, basically binds onto the tissue factor to form an active complex, which then goes on and basically activates Zymogen Ten into its active form. So this is basically the extrinsic pathway. And the entire purpose of this extrinsic pathway is to basically create a quick response and activate this important protein, enzyme Ten, because it's enzyme Ten, after combining with another protein Five, that basically activates prothrombin into Thrombin. And then it's Thrombin that is used to actually form the blood clots that are used to seal off that particular rupture in the blood vessel. Now, at the same exact time, to amplify, to greatly increase the number of X that we activate, we also have the other pathway, the intrinsic pathway.