Immunity and Reproduction

Immunity and Reproduction - 3 Lines of Defense Physical and...

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3 Lines of Defense Physical and chemical barriers Skin, mucus, pH Non-specific defense Some WBC’s, defensive proteins, inflammation, fever Specific defense Specific Defense Body’s specific defenses working together called Immune Response 2 major characteristics: It is specific It has memory Specificity antibodies in B lymphocytes produce response to an antigen Antibodies are specific to a certain antigen and bind to it, causing the antigen cells to clump together Memory When the immune system sees an antigen it trains lymphocytes to recognize that antigen These lymphocytes stay in your blood stream for the rest of your life, always looking for that specific antigen Vaccines Lymphocytes White blood cells associated with specific defense B lymphocytes and T lymphocytes Both form in bone marrow B cells mature in bone marrow (B=bone) T cells mature in thymus gland (T=thymus) B and T Cell Jobs B cells produce antibodies T cells attack antigen, activate immune system, deactivate immune system
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This note was uploaded on 09/08/2010 for the course BIOL 21 at San Jose State University .

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Immunity and Reproduction - 3 Lines of Defense Physical and...

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