Flashcard: The Immune System

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What is a vaccine?

Back

A substance used in vaccination that consists of pathogens that have been weakened or killed but can still trigger the immune system into action.

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What is the inflammatory response?

Back

Part of the body's defense against pathogens, where fluid and white blood cells leak from blood vessels into tissues to destroy pathogens.

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How can infectious diseases be spread?

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Infectious diseases can be spread by touching contaminated objects, not washing hands regularly, and being near infected people.

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Which organ is NOT part of the immune system?

Back

Liver.

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What is a phagocyte?

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A white blood cell that destroys pathogens by engulfing them and breaking them down.

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What is an antigen?

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A substance that triggers an immune response, often found on the surface of pathogens.

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What role do B-cells play in the immune system?

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B-cells produce antibodies that help to neutralize pathogens.

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What is the function of antibodies?

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Antibodies are proteins produced by B-cells that specifically target and neutralize foreign substances like pathogens.

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What is the role of the spleen in the immune system?

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The spleen filters blood and helps to remove old or damaged blood cells, as well as pathogens.

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What is the difference between active and passive immunity?

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Active immunity is developed through exposure to pathogens, while passive immunity is acquired through antibodies from another source.