Spleen has a similar structure to a large lymph node, which primarily functions as a blood filter. The spleen plays an important role in the red blood cells also known as aserythrocytes and the digestive system. Old and damaged RBC’s are destroyed in the spleen and It is known as the RBCs Graveyard.Function of spleen :\tThe spleen is the largest organ of the lymphatic system. It keeps all the body fluids balanced.\tIt is made up of a red pulp tissue that filters the old and damaged red blood cells.\tThe important function of the spleen is to filter the blood. The spleen recycles the old and damaged red blood cells and the white blood cells are stored.\tSpleen\xa0also helps to fight against bacteria that cause diseases such as meningitis and pneumonia.