In this video, we're going to introduce our map of the lesson on the first line defenses of innate immunity. And so, there are 3 general groups within the first line defense of innate immunity. The first general group is going to be the physical barriers, the second general group are going to be the chemical barriers, and the third general group is going to be the host microbiome. These three groups all make up the first line defenses of innate immunity.
If we take a look at our image down below, notice it's showing you our map of the lesson on innate immunity. Over here on the left-hand side is the specific map for the first line defenses of innate immunity, which once again act as the security walls to prevent the entry of microbes. It is broken up into 3 general groups: the physical barriers, the chemical barriers, and the host's microbiome.
Notice that the second line defenses over here are all grayed out and much smaller because we're going to talk more about those much later in our course after we finish talking about the first line defenses. As we move forward in our course, we'll be able to talk a lot more about these first line defenses, including the physical barriers, the chemical barriers, and the host microbiome.
This here concludes our map of the lesson on the first line defenses, and I'll see you all in our next video.