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O O O O OWhich statements are true of lymph nodes? Select all that apply.
They filter lymph as it flows back to the heart.
They are packed with T-cells and B-cells.
They produce red blood cells.
They are all located in the spleen.
They can become inflamed when fighting foreign material or pathogens.
They are grouped in the neck, chest abdomen armnits and aroin
Final answer:Lymph nodes are part of the lymphatic and immune systems, filtering lymph and containing lymphocytes like T-cells and B-cells that destroy pathogens. They are distributed throughout the body and can swell during infection. They do not produce red blood cells and are not all located in the spleen.Explanation:Lymph Nodes and Their FunctionsLymph nodes are integral to the functioning of the lymphatic system and the immune response. They filter lymph as it makes its way back to the bloodstream, ensuring that microorganisms and tissue debris are captured and dealt with. Within these nodes, pathogens are destroyed by lymphocytes, such as T-cells and B-cells, which are plentiful within the nodal structure. Contrary to producing red blood cells, which occurs in the bone marrow, lymph nodes are involved in the immune function and may swell when actively fighting infections due to an increase in lymphocyte production and activity. They are strategically located throughout the body, with concentrations in the neck, armpits, chest, abdomen, and groin.It is important to note that not all lymph nodes are located in the spleen; instead, they are distributed throughout the body. The spleen, much like lymph nodes do for lymph, filters the blood and triggers immune responses. Dendritic cells and macrophages within the lymph nodes play a crucial role in antigen presentation, which is vital for the proper activation of T-cells and B-cells during the adaptive immune response. The process of antigen presentation and subsequent lymphocyte activation within the lymph nodes is an essential part of the body's defense mechanisms against pathogens....