Which organ filters lymph and produces lymphocytes to fight infection?

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Multiple Choice

Which organ filters lymph and produces lymphocytes to fight infection?

Explanation:
Lymph nodes are where lymph is filtered and where immune cells, especially lymphocytes, respond to pathogens. As lymph flows through a node, microbes are trapped by the node’s immune cells, and B and T lymphocytes are activated to coordinate a fight against infection. That dual role—cleaning the lymph and mounting an immune response—makes lymph nodes the organ described. Lymph is the fluid that’s being cleaned, so it doesn’t filter itself. Lymph capillaries are the tiny vessels that pick up tissue fluid to form lymph, not filters. Lymph vessels simply transport lymph through the system.

Lymph nodes are where lymph is filtered and where immune cells, especially lymphocytes, respond to pathogens. As lymph flows through a node, microbes are trapped by the node’s immune cells, and B and T lymphocytes are activated to coordinate a fight against infection. That dual role—cleaning the lymph and mounting an immune response—makes lymph nodes the organ described.

Lymph is the fluid that’s being cleaned, so it doesn’t filter itself. Lymph capillaries are the tiny vessels that pick up tissue fluid to form lymph, not filters. Lymph vessels simply transport lymph through the system.

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