What is the main role of the lymphatic system?

The lymphatic system plays a crucial role in protecting the body from disease. It is an integral part of the immune system, composed of lymph nodes, lymph vessels, and various lymphoid organs. This system helps filter harmful substances, including pathogens and toxins, from the body and transports lymph, a fluid containing white blood cells, throughout the body. The lymph nodes act as checkpoints where immune responses can be triggered, facilitating the detection and destruction of harmful agents. By maintaining fluid balance and contributing to the overall immune response, the lymphatic system plays a fundamental role in defending the body against infections and diseases.