00:01
So for this question, we're talking about the coagulation cascade.
00:05
And the key here is that coagulation is the process in which fibrogen is eventually converted to fibrin to act as a mesh, which traps platelets and erythrocytes and forms a clot that stops bleeding.
00:18
So we're given four key steps in coagulation and we're asked to order them from what happens first to what happens last.
00:24
The first one we're offered is thrombin is formed from prothrombin.
00:29
The next one is subendothelial.
00:31
Collagen is exposed after that fibrigenolysis and then prothrombin activator is formed.
00:40
So let's go over a simplified version of the quagulation cascade.
00:45
So a simplified version, and i know there is a lot of lot of factors in the cascade, is we just have a surface contact.
00:51
So something's going to be exposed.
00:53
So there's a cut, something like that...