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 also produce antibodies, which are proteins that help to destroy harmful substances. The filtering process in the lymph nodes is essential for maintaining a healthy immune system. By trapping and neutralizing harmful substances, the lymph nodes help to prevent infections and diseases from spreading. Without properly functioning lymph nodes, the body's ability to fight off pathogens would be severely compromised. In addition to filtering harmful substances, lymph nodes also play a role in immune surveillance. They are constantly monitoring the lymphatic fluid for signs of infection or disease. If a threat is detected, the lymph nodes will mount an immune response to neutralize the threat and protect the body.- Lymph nodes are critical components of the immune system. Their ability to filter harmful substances from the lymphatic fluid helps to keep the body healthy and free from infections. By understanding the role of lymph nodes in the immune system, we can appreciate the complex mechanisms that work together to protect our bodies from harm.
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