PSL301H1 Chapter Notes -Pus, Warfarin, Spirometer
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PSL301H1 Full Course Notes
Verified Note
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Document Summary
Immune system serves three major functions: protects body from disease- causing invaders known as pathogens. Microorganisms (microbes) that act as pathogens (bacteria, viruses, fungi and one- celled protozoans). Larger pathogens include multicellular parasites (hookworms and tapeworms) Virtually any exogenous molecular or cell has potential to elicit an immune response. Pollen, chemicals and foreign bodies are examples of substances to which body may react. Substances that trigger body"s immune response and can react with products of that response are known as antigens. When body"s immune system fails to perform its normal functions. Pathologies of immune system generally fall into one of. It removes dead or damaged cell as well as old rbc. Lack of response immunodeficiency disease arise when some components of immune system fails to work properly. Primary immunodeficiency is a family of genetically inherited disorders that range from severe to mild. Acquired immunodeficiencies may occur as a result of infection (aids caused by hiv) Pathogens of the human body.
