Reticular tissue serves several important functions: 1. Structural Support: It provides a supportive framework for organs, especially those involved in the immune system. 2. Filtration: In organs like the lymph nodes and spleen, reticular fibers form a meshwork that filters bodily fluids, trapping pathogens and debris. 3. Cellular Environment: It creates a conducive environment for immune cells to interact, proliferate, and function effectively.