What are the advantages of having both an immune and an inflammatory system of defense?
INDIVIDUAL WITH AN INEFFECTIVE IMMUNE SYSTEM CANNOT REACT WITH NONSELF ANTIGENS. DESCRIVE SOME EXAMPLE OF THE KIND OF PROBLEM THESE INDIVIDUAL ARE LIKELY TO ENCOUNTER.
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Of course our immune system is our body's defense system against infection and disease. We actually have three, not just two, immune responses. The first is our anantomic system. This would be thinks like you skin and mucus membranes. If something does happen to penetrate our anatomic system then the inflamatory system kicks in to rid our body of the alien substance. Things our inflamatory system might have us doing are: runny nose, fever, sneezing. If these actions don't clear our body of the alein substance then our immune system kicks in to send white blood cells to attack the alien substance. They take out the antigens. So the advantage is that if one system fails to rid our body of the problem there is a stronger backup to take care of it.
The immune system evolved and was complexed structural and functional under permanent selective pressure which infectious agents exert , which tend to invade, to colonize and multiply in the tissues. The structure of the immune system is a direct reflection of its interaction with the diversity of infectious agents that stimulate it. The two opposing forces have shaped each other in constant conflict. Hosts that do not neutralize the infectious agent are doomed to death, and those who survive are better adapted to resist subsequent infections. Antigenic heterogeneity problem of viruses and pathogenic bacteria is important not only theoretically, but is essential to the practical issue of vaccination, because there is risk of stimulating immune response without effective protection. The consequence of stimulating an immune response may be ineffective or even aggravation of infectious disease and activating autoimmune pathogenicity mechanisms.
The immune response has to counter not only the diversity of antigens to which it is exposed, but must find the response to changes in biochemical structure, at the different strains of microorganisms.
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