So once again, let's review the intrinsic pathway. So when blood vessel ruptures inactive protein factor twelve is exposed to the collagen in the tissue surrounding our blood vessel and this activates factor twelve. Now activated. Factor twelve is also a sea of protease and it goes on and cleaves our factor eleven and activates factor eleven, which then goes on to activate factor nine. So this one right here, which goes on to activate factor ten. Now, let's move on to our converging final common pathway which begins in this area.