Why spleen called graveyard of rbc?

The spleen is often referred to as the "graveyard" of red blood cells (RBCs) because it plays a crucial role in filtering and recycling old or damaged RBCs from the bloodstream. As blood passes through the spleen, macrophages engulf and break down these cells, allowing the iron and other components to be reused for the production of new blood cells. This process helps maintain healthy blood cell levels and ensures the removal of ineffective or worn-out cells.