FA24 AP09 ALL Terms Vocab Flashcard

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Largest lymphoid organ.

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Spleen: The spleen is the largest lymphoid organ in the body, playing a crucial role in filtering blood and supporting the immune system.

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Type of T lymphocyte that orchestrates cell-mediated immunity.

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Helper T Cell: A type of T lymphocyte that helps activate other immune cells and releases lymphokines to coordinate the immune response.

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System consisting of lymphatic vessels, lymph nodes, and other lymphoid organs.

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Lymphatic System: A network that helps maintain fluid balance, filters pathogens, and supports immune function.

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A strategy for causing the body to develop immunity to a specific pathogen.

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Immunization: The process of stimulating the immune system to develop protection against specific pathogens.

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Immunity conferred by activated T cells that directly lyse infected or cancerous cells.

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Cell-Mediated Immunity: A form of immunity where T cells directly attack and destroy infected or cancerous cells.

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Chemical substances released by helper T cells to regulate immune responses.

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Lymphokines: Cytokines produced by T cells that help regulate the immune response.

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Cells that present antigens to T cells to initiate an immune response.

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Antigen-Presenting Cells (APCs): Cells that display foreign antigens on their surface to activate T cells.

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The process of introducing a vaccine to stimulate an immune response.

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Vaccination: The act of administering a vaccine to induce immunity against a specific disease.

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Type of immunity that involves the production of antibodies by B cells.

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Humoral Immunity: Immunity mediated by B cells that produce antibodies to neutralize pathogens.

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The role of lymph nodes in the immune system.

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Lymph Nodes: Small structures that filter lymph fluid and house immune cells to respond to pathogens.