The Lymphatic System and Immunity

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What is the primary function of the lymphatic system?
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The primary function of the lymphatic system is to return excess tissue fluid to the bloodstream and to help defend the body against infection.
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What are lymph nodes and what is their function?
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Lymph nodes are small, bean-shaped structures that filter lymph fluid and house lymphocytes to fight infections.
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What type of cells are stored in the lymph nodes?
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Lymph nodes store white blood cells called lymphocytes, which are part of the immune system.
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What is the role of the spleen in the lymphatic system?
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The spleen filters blood, removes old red blood cells, and helps fight infections.
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How does the lymphatic system collaborate with the circulatory system?
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The lymphatic system helps maintain fluid balance by returning interstitial fluid to the bloodstream.
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What is lymph?
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Lymph is a fluid containing white blood cells that circulates through the lymphatic system.
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What is the thymus and its role in immunity?
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The thymus is an organ in the lymphatic system where T-cells mature, which are critical for adaptive immunity.
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How do lymphatic vessels differ from blood vessels?
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Lymphatic vessels transport lymph fluid and have valves similar to veins to prevent backflow.
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What is innate immunity?
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Innate immunity is the body's first line of defense, consisting of physical, chemical, and cellular defenses against pathogens.
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What is adaptive immunity?
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Adaptive immunity is a type of defense that learns and remembers specific pathogens to fight them more effectively in the future.
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What are antibodies?
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Antibodies are proteins produced by B-cells that recognize and help neutralize pathogens.
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What is the role of T-cells in the immune response?
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T-cells help destroy infected cells and coordinate the body's immune response.
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What is an autoimmune disease?
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An autoimmune disease occurs when the immune system mistakenly attacks the body's own cells.
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What is the difference between active and passive immunity?
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Active immunity is developed when the body is exposed to a pathogen, while passive immunity is acquired from another source, like maternal antibodies.
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How does the lymphatic system help transport dietary fats?
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The lymphatic system absorbs fats and fatty acids from the digestive tract through structures called lacteals.
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