Now let's suppose we get a cut in our skin and what that means is the skin essentially fails in preventing the movement of pathogens because now that we have a cut that pathogen will have no problem making its way into the tissues of our body. So once the anatomical physical barriers are breached and the pathogen makes its way into our tissue or into our blood, what happens is the innate immune system responds in another way. It responds by initiating a process known as inflammation and more specific acute inflammation. Now, what exactly is inflammation? Well, inflammation is this process by which we have many different types of things take place as we'll see in just a moment. And these things together basically help us kill off the different types of invading pathogens that insert our tissue.