Immune System

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What is the main function of the immune system?

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To protect the body against pathogens such as bacteria, viruses, and other foreign invaders.

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What are lymphatic vessels?

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Lymphatic vessels are part of the lymphatic system and are responsible for transporting lymph, a fluid containing infection-fighting white blood cells, throughout the body.

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What is interstitial fluid?

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Fluid that exists in the spaces between tissues, providing nutrients and waste removal for cells.

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What is the acquired immune system?

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A part of the immune system that needs to be 'primed' or exposed to a pathogen before it can effectively respond to that pathogen.

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What are antibodies?

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Proteins produced by B-cells that specifically recognize and bind to antigens on pathogens.

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How do antibodies function in the immune response?

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They mark pathogens for destruction by T-cells and other immune cells.

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What is the difference between innate and acquired immunity?

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Innate immunity is the body's first line of defense that is always active, while acquired immunity develops after exposure to specific pathogens.

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

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T-cells are a type of white blood cell that help to destroy infected cells and coordinate the immune response.

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What is the significance of vaccinations in the immune system?

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Vaccinations help to 'prime' the acquired immune system by exposing it to a harmless form of a pathogen, allowing it to respond more effectively in the future.

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What are antigens?

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Substances that trigger an immune response, often found on the surface of pathogens.