Lymph nodes filter harmful substances from the lymphatic fluid from "summary" of Anatomy & Physiology by Kevin T. Patton
Lymph nodes are small, bean-shaped structures that play a crucial role in the immune system. They act as filters, helping to remove harmful substances from the lymphatic fluid. Lymphatic fluid, which is similar to blood plasma, circulates throughout the body and collects waste products and pathogens from tissues. The lymph nodes contain immune cells, such as lymphocytes and macrophages, which are responsible for recognizing and attacking foreign invaders. When harmful substances enter the lymphatic fluid, they are transported to the lymph nodes where they encounter immune cells. These cells work together to identify and neutralize the pathogens, preventing them from spreading throughout the body. Lymph nodes ...
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