The Immune System Essay

1621 Words Nov 29th, 2014 7 Pages
The job of the immune system is to be a defense mechanism against diseases and any other harmful substance that enters the body. When it is functioning properly the immune system will attack any invaders and neutralize that specific threat. It will also create an encoding of that specific disease or sickness so that the body can never be harmed by that specific one ever again. So essentially the immune system is an ever changing and constantly strengthening tool that is essential in maintaining health in the body. (Mccoy, 2014) The immune system functions primarily by attacking disease makers called pathogens. It does this through the use of Leukocytes. These are white blood cells. These cells are housed around the body and are the attackers for the immune system. There are two main types of leukocytes. These are phagocytes and lymphocytes. Phagocytes are the cells that actually do the destroying. They do this by literally engulfing and consuming the invader. Lymphocytes though, are the cells that remember and encode the disease. By doing this, it helps the body know how to fight it as well as makes sure the body is not ever affected by the same disease or sickness twice. These cells are always being carried throughout the body and are always ready for function. (Nemours Foundation, 2014)
When functioning properly the immune system is extremely important. It is the body’s biggest defense asset. It keeps and restores good health constantly. But like most good things, it can…

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