And the process by which we create blood clots is known as the blood clotting cascade. So let's suppose we have some type of trauma inside our blood vessel, and so the endothelium of that blood vessel basically ruptures. We have a cut in our blood vessel. Now, what begins to happen is two different processes, two different pathways begin to take place. One of these pathways is a quick process and the other pathway is a bit slower. So we have the extrinsic pathway, that's the quick one, and we have the slightly slower one, that's the intrinsic pathway.