front 1 lymph nodes | back 1 small, encapsulated structures that contain lymphocytes, macrophages, and dendritic cells screen and filter the lymph for pathogens |
front 2 MALT | back 2 composed of B and T lymphocytes and found throughout the gastrointestinal and respiratory tracts in areas that are especially vulnerable to pathogens from the external environment kill pathogens entering the body |
front 3 Spleen | back 3 consists of red and white pulp; red pulp contains macrophages that destroy old erythrocytes while white pulp surrounds small arteries and contains leukocytes that detect and destroy pathogens filters the blood for pathogens |
front 4 Thymus | back 4 located in the mediastinum and is composed of two lobes, each containing many thymic lobules consisting of an outer cortex and an inner medulla site of T cell maturation |
front 5 Tonsils | back 5 specialized clusters of partially encapsulated MALT in throat made up of lymphoid follicles (nodules) kill pathogens entering the body |
front 6 antibody | back 6 Y-shape protein structures produced by plasma cells that possess an antigen-binding site specific to the antigen they detect; |
front 7 antigens | back 7 antigens are substances that trigger the production of antibodies. |
front 8 B Lymphocytes | back 8 perform humoral immunity and include plasma cells (antibody producing cells) and memory B cells |
front 9 T Lymphocytes | back 9 perform cell-mediated immunity and include Helper T cells. |
front 10 Cytotoxic T cell | back 10 T cells kill infected cells |
front 11 Helper T cells: | back 11 T lymphocytes (helper T cells) recognize the antigen and release chemicals that cause the proliferation of cytotoxic T cells and B cells |
front 12 memory B cells | back 12 are long-lived cells that are activated by subsequent exposure to a specific antigen and do not produce antibodies but direct the proliferation of plasma cells |
front 13 plasma cells | back 13 produce antibodies |
front 14 nonspecific immunity | back 14 includes physical barriers (skin and mucous membranes), fever, the inflammatory response, phagocytosis, and the complement system; |
front 15 specific immunity | back 15 involves B and T cells and proteins that recognize and respond to only one pathogen as well as production of memory B and T cells that produce a stronger and quicker second responds to a second encounter to an antigen |