Complete the sentences describing the RBC life cycle
Red blood cells are the most common cell type found in blood, with about 5 (1)BLANK cells per microliter of blood
However this number can vary greatly depending on genetics, (2)BLANK, and state of health
These cells are produced by the bone marrow and have a lifespan of 3 to 4 (3)BLANK
When these cells die, they are destroyed by cells in the liver and spleen called (4)BLANK
This process releases (5)BLANK, which can be stored in the liver, and (6)BLANK, which will be excreted via the intestines