Now, the second thing we should notice is it looks rather complicated and that's because we have over a dozen different types of enzymes and proteins involved in the process of the blood clot and cascade. So the rather difficult aspect about this cascade is remembering the different types of enzymes and how they interact with one another to form these blood clots. So, to make things easier, let's actually divide our process into three different processes. So generally speaking, we can divide the blood clot and cascade into three processes. The first two processes, or the two, the first two pathways are known as the extrinsic pathway and the intrinsic pathway. Now, the extrinsic pathway is shown in black with these black arrows and the intrinsic pathway is shown with the blue arrows.