The spleen is part of the \( =--- \) system. Urinary Digestive Lymphatic Reproductive

The spleen is part of the lymphatic system, which is essential for maintaining fluid balance and housing immune cells that help fight infections. This intriguing organ not only filters blood but also stores white blood cells and platelets, playing a key role in both immune response and blood maintenance. In real-world application, think of the spleen as a security checkpoint in a bustling airport. It filters out unwanted passengers (like old or damaged blood cells) while making sure that the good guys (healthy immune cells) are ready for any potential threats, ensuring that your body stays in tip-top shape!