Acquired Immunity Specific or Adaptive immunity Innate or non specific immunity is built in at birth Acquired or specific immunity is the third line of defense or the last resort Natural Immunity Normal life experiences in the environment Natural Active Exposed to microorganisms Natural Passive Passing immunity to someone else Ex mother to unborn or newborn child Artificial Immunity Medical interventions or procedures Artificial Active Vaccines to help prevent disease Artificial Passive Receives a part of someone else s immune system medically surgically Terms to know Antigen Ag A substance or chemical that can stimulate the immune system and reacts with lymphocytes of their products Antigens cant be proteins on your body they have to be found outside the body on plants microbes viruses foreign animal pathogens Antigens are found on the surface of the pathogen Antibody Ab A serum such as blood or body fluids that are proteins produced by the immune system in response to a specific antigen Lymphocytes Primary cells of the immune system in the blood stream and lymphoid tissue to bind with specific antigens Lymphocytes most commonly come from the bone marrow T Lymphocytes T cell receptors mature in Thymus o Cell mediated response B Lymphocytes B cell receptors mature in bone marrow o Antibody mediated response Primary defense against extracellular pathogens B cells recognize specific antigens to produce specific antibody effector antibody Effector end product that s doing work and getting rid of Most bacterial pathogens are outside cells extracellular microbe cells Lymphocytes can recognize almost all pathogens your body can encounter and have specific antibodies for each pathogen Antigen Receptors IgD Lymphocytes recognize Antigens T independent or need help from the T Cells T dependent Activated lymphocytes divide over and over again by mitosis to produce antibody specific antigens
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