What are lymph nodes primarily responsible for?

What are lymph nodes primarily responsible for?

• A. Filter lymph
• B. Filter blood
• C. Store bile
• D. Store calcium

Answer: (A)

Lymph nodes primarily filter lymph. As lymph travels through the node, macrophages and other immune cells trap and digest pathogens and debris, and lymphocytes scan for antigens to trigger an immune response. This filtration and immune surveillance helps prevent pathogens from spreading and coordinates the body's adaptive response, including antibody production and T cell activation. They don’t filter blood (that’s the spleen and liver), don’t store bile (that’s the gallbladder), and don’t store calcium (that’s bones and related tissues).

Lymph nodes primarily filter lymph. As lymph travels through the node, macrophages and other immune cells trap and digest pathogens and debris, and lymphocytes scan for antigens to trigger an immune response. This filtration and immune surveillance helps prevent pathogens from spreading and coordinates the body's adaptive response, including antibody production and T cell activation. They don’t filter blood (that’s the spleen and liver), don’t store bile (that’s the gallbladder), and don’t store calcium (that’s bones and related tissues).