NEET BIOLOGY

Detailed explanation-1: -Final answer: Spleen is called the graveyard of RBCs.

Detailed explanation-2: -Erythrocytes or red blood cell’s life span is 120 days. After 120 days in the circulation, they are removed by macrophages which are a type of myeloid phagocytic cells. They are located primarily in the liver, spleen, and bone marrow. The worn-out RBC is destroyed in the spleen and liver.

Detailed explanation-3: -Later in embryonic life, the liver becomes the most important red blood cell-forming organ, but it is soon succeeded by the bone marrow, which in adult life is the only source of both red blood cells and the granulocytes.