How do the innate and adaptive immune systems differ in their responses to forei

The innate immune system is the system we have when we're born. This system includes the skin and mucous membranes, the inflammatory response, and proteins already present in our cells. This system is the first one to come into contact with a foreign substance and thus is always prepared to defend the body. Therefore, we think of the innate system as the nonspecific body defense and the first line of defense to protection from invaders. 

The adaptive immune system is the second line of defense which defends us from specific invaders. This system consists of molecules like pyrogens and immune cells such as lymphocytes and macrophages. This system differs from the innate system since it must be exposed to the invader before it can form a response.