adaptive defense

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8 Terms

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Adaptive immune system is a specific defense system that elimantes -

almost any pathogen or abnormal cell in body

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  • Shortcoming:

  • must be primed by initial exposure to specific foreign substance

  • -when sick, already primed the system of getting sick again

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  • Adaptive immune system does-

  • Amplifies inflammatory response

  • Activates complement

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  • Two main branches of adaptive system -

  1. Humoral (antibody-mediated) immunity

  2. Cellular (cell-mediated) immunity

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adaptive immunity characterists-

-recognizes and targets specific antigens

  • not restricted to initial site

  • mounts an even stronger attack to “known” antigens (second and subsequent exposures)

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  1. Humoral immunity (B-Cell Immunity)

B cells produced by lymphocytes

Bone marrow

antiBodies ( has extracellular targets)

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  1. 2. Cellular Immunity (T-Cell Immunity)

T cells (directly killing targeted cells)

Thymus

Targets (has cellular targets