Lymphatic system

Last update by Kim on 09/22/2012
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Innate(nonspecific) defense

Answer:
Nonspecific, quite general & protect against many types of pathogens.

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    What are the seven Innate(nonspecific) defenses?
    1. Mechanical barriers
    2. Chemical Barriers
    3. Species resistance
    4. Natural killer(NK) cells
    5. Inflammation
    6. Phagocytosis
    7. Fever
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    Adaptive defense
    Specific, very precise, targeting specific pathogens & providing immunity.
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    Resistance to specific pathogens or to their toxins or metabolic by products.
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    Differentiation. Lymphocytes become immunocompetent by this process, which means they become capable of responding to only one antigen.
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    What is the differentiation, Primary location & functtion of the T-cells(T lymphocytes)?
    Site of differentiation- Thymus
    Primary location- Lymphatic tissues, 70-80% of the circulating lymphocytes
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    What is the differentiation, Primary location & functtion of the B-cells(B-lymphocytes)?
    Site of differentiation- Red bone marrow
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    Interferons are:
    Produced by Lymphocytes & fibroblasts(hormonelike peptide) in response to viruses or tumor cells. Interferons bind to receptor on uninfected cells, stimulating them to make proteins that block replication of the viruses.
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    a group of proteins, in plasma & other body fluids, that interact in a series of reactions or cascade
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    Perforins are:
    Cytolytic(cell-cutting) substances that lyse(destroy) the cell membrane, destroying the infected cell.
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    Mononuclear phagocytic system
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