Immunisation. The human body comes into contact with millions of germs and is also exposed to them. However the body does not get ill from these organisms because of the immune system

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Immunisation

The human body comes into contact with millions of germs and is also exposed to them.  However the body does not get ill from these organisms because of the immune system, the immune acts as the bodies’ defense against infectious organisms and other invaders which comes into contact with the body. Everybody has an inbuilt immune system and the function of it is to defend the body against germs and microorganisms. Germs are also described as pathogens and foreign invaders which include bacteria, viruses and fungi. The immune system is made up of many networks of special cells, such as tissue, proteins and organs. The immune system does a great job keeping people healthy and preventing infections by attacking foreign organisms that invade our systems and cause diseases.

Pathogen                                                                                                A pathogen is a substance a gene which produces and causes many diseases and micro organisms in the body, it is an infectious organism. However  the human body comes into direct contact with pathogens everyday however the immune system recognises it as a intruder and destroys the infectious organism which then is no longer harmful and isn’t capable to cause harm to the body any longer, when a person comes into contact with a pathogen his is considered as exposed,  however when the pathogen  enters the body and has produced a bacterium in the body this is then considered as being infected by a pathogen and this is when the natural immunity stimulates and then reacts.

Bacteria                                                                                        Bacteria’s are found all around the body and exist under every condition of life which replicates every second. Virus is another concept of organisms, which reproduce but don’t respire or nor do they move many are pathogenic; they are harmful and are capable of causing diseases. Fungi is as well as a bacteria and are most often associated with plants, it is truly pathogenic and is also capable of producing infectious microorganisms however Memory cells are made to invade and attack those foreign cells and then engulf it, this means to destroy it.                                                                                  

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The natural immune system                                                                                      The immune system is also known as being an ‘active natural immunity’; this means that the immune system is a natural immune system. However an active natural immune system is immunity which only occurs when a foreign invader is present in the body, and due to the exposure of these foreign invaders on the surface of the lymphocytes the lymphocytes become activated. This is when this immunity is activated and because of this the immune system is known as a natural immune ...

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