Imagine you are a pathogen. You are trying to invade a human, and you find yourself moving through barriers. Describe the barriers you face (the components of the immune system), how you move past these barriers and their response to you (immune responses). Include how this invasion would be easier if the human had a weakened immune system.

The different barriers that you have to go through are the different organs of the immune system. These are the lymphoid organs, thymus, and bone marrow. The secondary wall that you have to go through are the lymphatic tissues which include the lymph nodes, adenoids, skin, liver, tonsils, spleen, and the lymph vessels.

At all times, these systems work hand-in-hand so that the body can protect itself in order for it to survive