How the Immune system works together
![Picture](/uploads/1/7/0/6/17061442/823979.gif?310)
The immune system components work together to protect your body and fight off any foreign invaders that enter your body. The first line of defense of the body is the skin, which the outer layers are made of layers of dead cells. Your skin is cover in bacteria, but it is harmless as long as it stays on the outside of the body. The openings to the inside of your body, such as your nose and mouth are protected by the secretions your body makes, like saliva and mucus. These secretions prevent the germs from settling deeper in the tissue and the keep the micro-organism numbers low. But this defense line is not perfect and dangerous matter can enter the body in various ways. Once the viruse enters, it attaches itself to cells in the body and uses their material to reproduce more viruses. The new viruses burst out of the cells, then migrate to other areas of the body. The immune system begins to react to the viruse when the cells come in contact with whole viruses or parts of the viruse on other cells. Macrophages engulf and destroy the viruses, while neutrophils arrive from the bloodstream and settle in the throat area. Then they release their pathogen-destroying chemicals. Killer T-cells or cytotoxic T-cells attach onto cells that have been infected with the viruse and destroy them. B-cells produce anti-bodies that attach to the viruses and helper T-cells tell other immune cells to do their job better and faster. Immune cells also make thousands of copies of themselves to aid and amplify the immune response. During this many people will experiences things like a cough, sore throat and runny nose this is due to the damage from the viruse. But immune system activity can cause swelling, tenderness, and extra production of secretions. Fevers may also occur. The body temperature gets higher then normal, so that it is to hot for the invading viruse to reproduce and survive. When the immune system has cleared the body of the viruse and symptoms begin to go away, the healing process can begin. A bacteria invasion would be a little bit different because bacteria would multiple on it's own, so the macrophages would be very important cells in this kind of invasion.
To activate an immune system response the immune cells must come in contact with the foreign invaders.There are many proteins on immune cells. When the proteins come in contact with something that is unfamiliar to it, the cell will try to destroy it. Macrophages by engulfing it, B-cells by releasing anti-bodies and neutrophils by releasing chemicals. More immune cells will begin to activate if the pathogen spreads and multiples.
To activate an immune system response the immune cells must come in contact with the foreign invaders.There are many proteins on immune cells. When the proteins come in contact with something that is unfamiliar to it, the cell will try to destroy it. Macrophages by engulfing it, B-cells by releasing anti-bodies and neutrophils by releasing chemicals. More immune cells will begin to activate if the pathogen spreads and multiples.