Innate immune system

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What are phagocytic cells?

Back

Phagocytic cells are immune cells that can engulf and destroy pathogens, such as bacteria and viruses.

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What is the role of neutrophils and macrophages in the immune system?

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Neutrophils and macrophages are phagocytic cells that engulf pathogens and destroy them.

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What are interferons?

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Interferons are defensive proteins produced by infected cells that help protect adjacent cells from getting infected by viruses.

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Does the innate immune system strengthen over time with exposure to pathogens?

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False. The innate immune system does not get stronger with exposure; it is always present and responds the same way.

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What are some examples of innate immune defenses?

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Examples include skin/exoskeleton, mucous membranes, and white blood cells.

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What happens during inflammation?

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During inflammation, neutrophils are activated to engulf bacteria, histamines are released by mast cells, and there is increased blood flow, heat, and fluid to the infected area.

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Is inflammation an adaptive immune response?

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No, inflammation is part of the innate immune response, not the adaptive immune response.

Front

What is the function of skin in the innate immune system?

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Skin acts as a physical barrier to prevent pathogens from entering the body.

Front

What role do mucous membranes play in the innate immune system?

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Mucous membranes trap pathogens and contain antimicrobial substances to help prevent infection.

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How do white blood cells contribute to the innate immune response?

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White blood cells, such as neutrophils and macrophages, help identify and destroy pathogens.