Key Vocab - 10. Lymphatic System

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Lymphatic system

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Network of vessels and organs that drain lymph and carry white blood cells to fight infections

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Lymph nodes

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Small round structures that are part of the body’s immune system; filters substances including pathogens through the lymphatic fluid and contains white blood cells to help fight disease

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Lymph vessels

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Thin tubes that carry lymph fluid and white blood cells through the lymphatic system

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Bone marrow

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Soft, spongy tissue that has many blood vessels found in the center of most bones

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Thymus

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Organ found near the neck; site of T cell development

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Spleen

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Organ found in the abdomen that recycles, stores, and removes red blood cells from blood

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Tonsils

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Small lymph organs found in the back of the throat; filters pathogens from entering the body through the mouth or nose; stores white blood cells to fight pathogens

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Function of the lymphatic system

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Drains lymph and carries white blood cells to fight infections