What is one of the main functions of the lymphatic system?

The lymphatic system plays a crucial role in maintaining fluid balance within the body by draining excess lymphatic fluid from tissues. This fluid, known as lymph, contains waste products, proteins, and immune cells. By transporting lymph back into the bloodstream, the lymphatic system helps prevent tissue swelling (edema) and ensures that immune cells can effectively circulate and respond to pathogens. Additionally, the lymphatic system is integral to the functioning of the immune system, as it filters lymph through lymph nodes where immune responses can be activated. Thus, its primary function of draining lymph fluids is essential for homeostasis and immune defense.