immune system

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What is the innate immune system?

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The innate immune system is the body's first line of defense against pathogens, consisting of physical barriers (like skin), phagocytic cells, and inflammatory responses.

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What are T cells?

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T cells are a type of lymphocyte that play a central role in the adaptive immune response, specifically in recognizing and responding to specific antigens.

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What is the role of vaccines in the immune system?

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Vaccines stimulate the production of antibodies without causing the disease, preparing the immune system to fight off future infections.

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What is active immunity?

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Active immunity is the immunity that develops after exposure to a pathogen, leading to the production of antibodies by the immune system.

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What is passive immunity?

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Passive immunity is the short-term immunity that is acquired by receiving antibodies from another source, such as maternal antibodies through breast milk.

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What are B cells?

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B cells are a type of lymphocyte responsible for producing antibodies that target specific antigens.

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What is the function of phagocytes?

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Phagocytes are immune cells that engulf and digest pathogens and debris, playing a crucial role in the innate immune response.

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What is inflammation?

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Inflammation is a localized response to injury or infection, characterized by redness, heat, swelling, and pain, aimed at eliminating the cause of cell injury.

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What organs are part of the immune system?

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The immune system includes various organs such as the spleen, thymus, lymph nodes, and bone marrow, as well as cells like lymphocytes and phagocytes.

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What is the difference between innate and adaptive immunity?

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Innate immunity is the immediate, non-specific response to pathogens, while adaptive immunity is a delayed, specific response that develops over time.